A noticeable hump in your mattress can be related to one of three separate issues:  

1. Your mattress is only getting broken in where you sleep 

Solution: break in your mattress evenly

For the mattress to be the same firmness throughout, the middle must be deliberately broken in so that the foam layers are softened, just like they are under where you sleep. 

Walk, kneel, or crawl on the mattress for about 10 minutes a day for about a week. This will help the mattress layers soften up and help the middle feel a little less distinct in firmness than the sides. We cannot recommend this suggestion for the Recore, Logan & Cove or Brunswick mattresses as it could damage the mattress and void your warranty. Instead, try lying on the affected area to flatten the hump. 

If you always sleep on the same side of the bed, rotate the mattress every 3–6 months.

2. Your base is affecting the feel of your mattress

Solution: inspect your base

Take a look at the base that you're using, especially if you didn't replace your existing support system with the purchase of your new mattress. As a general note: wire grid platform beds and box springs are NOT suitable for our mattresses. They do not have the surface area to support the mattress over time and can void your warranty. Any dips in the base will transfer through the mattress and you will feel it. 

If your base is a split-king setup, the less flexible borders of the two bases can make the centre of the mattress feel much firmer. You might notice this in bases that flex or are already worn out.

If your foundation, box spring, or slat system flexes, your mattress will feel softer than it should, especially where you're sleeping. In this case, the flexing base responds to your body weight, and then the mattress reacts to your pressure — creating "too much" contouring. The easiest way to test this is to tip the mattress up and off of the frame and walk on the base to see if it moves. Alternatively, one person can lie on the mattress while the other looks underneath to inspect any bowing. 

If you're using a platform bed, make sure that the support beams are approximately 2" wide, spaced no more than 3" apart, and that there is appropriate centre support. Thin slats or widely spaced ones may not be supportive enough. 

If you really want to know if the base is the issue, test the mattress directly on the floor (space permitting).

Need a new mattress foundation? Shop Our Collection

3. Uneven mattress expansion after unboxing

Solution: wait 48 hours 

If the mattress doesn't eventually settle flat and evenly, contact our customer care team

A noticeable hump in your mattress can be related to one of three separate issues:  

1. Your mattress is only getting broken in where you sleep 

Solution: break in your mattress evenly

For the mattress to be the same firmness throughout, the middle must be deliberately broken in so that the foam layers are softened, just like they are under where you sleep. 

Try lying on the affected area to flatten the hump. This will help the mattress layers soften up and help the middle feel a little less distinct in firmness than the sides.

If you always sleep on the same side of the bed, rotate the mattress every 3–6 months.

2. Your base is affecting the feel of your mattress

Solution: inspect your base

Take a look at the base that you're using, especially if you didn't replace your existing support system with the purchase of your new mattress. As a general note: wire grid platform beds and box springs are NOT suitable for our mattresses. They do not have the surface area to support the mattress over time and can void your warranty. Any dips in the base will transfer through the mattress and you will feel it. 

If your base is a split-king setup, the less flexible borders of the two bases can make the centre of the mattress feel much firmer. You might notice this in bases that flex or are already worn out.

If your foundation, box spring, or slat system flexes, your mattress will feel softer than it should, especially where you're sleeping. In this case, the flexing base responds to your body weight, and then the mattress reacts to your pressure — creating "too much" contouring. The easiest way to test this is to tip the mattress up and off of the frame and walk on the base to see if it moves. Alternatively, one person can lie on the mattress while the other looks underneath to inspect any bowing. 

If you're using a platform bed, make sure that the support beams are approximately 2" wide, spaced no more than 3" apart, and that there is appropriate centre support. Thin slats or widely spaced ones may not be supportive enough. 

If you really want to know if the base is the issue, test the mattress directly on the floor (space permitting).

3. Uneven mattress expansion after unboxing

Solution: wait 48 hours 

If the mattress doesn't eventually settle flat and evenly, contact our customer care team

A noticeable hump in your mattress can be related to one of three separate issues:  

1. Your mattress is only getting broken in where you sleep 

Solution: break in your mattress evenly

For the mattress to be the same firmness throughout, the middle must be deliberately broken in so that the foam layers are softened, just like they are under where you sleep. 

Walk, kneel, or crawl on the mattress for about 10 minutes a day for about a week. This will help the mattress layers soften up and help the middle feel a little less distinct in firmness than the sides.

If you always sleep on the same side of the bed, rotate the mattress every 3–6 months.

2. Your base is affecting the feel of your mattress

Solution: inspect your base

Take a look at the base that you're using, especially if you didn't replace your existing support system with the purchase of your new mattress. As a general note: wire grid platform beds and box springs are NOT suitable for our mattresses. They do not have the surface area to support the mattress over time and can void your warranty. Any dips in the base will transfer through the mattress and you will feel it. 

If your base is a split-king setup, the less flexible borders of the two bases can make the centre of the mattress feel much firmer. You might notice this in bases that flex or are already worn out.

If your foundation, box spring, or slat system flexes, your mattress will feel softer than it should, especially where you're sleeping. In this case, the flexing base responds to your body weight, and then the mattress reacts to your pressure — creating "too much" contouring. The easiest way to test this is to tip the mattress up and off of the frame and walk on the base to see if it moves. Alternatively, one person can lie on the mattress while the other looks underneath to inspect any bowing. 

If you're using a platform bed, make sure that the support beams are approximately 2" wide, spaced no more than 3" apart, and that there is appropriate centre support. Thin slats or widely spaced ones may not be supportive enough. 

If you really want to know if the base is the issue, test the mattress directly on the floor (space permitting).

Need a new mattress foundation? Shop the Douglas Mattress Foundation

3. Uneven mattress expansion after unboxing

Solution: wait 48 hours 

If the mattress doesn't eventually settle flat and evenly, contact our customer care team

A noticeable hump in your mattress can be related to one of three separate issues:  

1. Your mattress is only getting broken in where you sleep 

Solution: break in your mattress evenly

For the mattress to be the same firmness throughout, the middle must be deliberately broken in so that the foam layers are softened, just like they are under where you sleep. 

Walk, kneel, or crawl on the mattress for about 10 minutes a day for about a week. This will help the mattress layers soften up and help the middle feel a little less distinct in firmness than the sides.

If you always sleep on the same side of the bed, rotate the mattress every 3–6 months.

2. Your base is affecting the feel of your mattress

Solution: inspect your base

Take a look at the base that you're using, especially if you didn't replace your existing support system with the purchase of your new mattress. As a general note: wire grid platform beds and box springs are NOT suitable for our mattresses. They do not have the surface area to support the mattress over time and can void your warranty. Any dips in the base will transfer through the mattress and you will feel it. 

If your base is a split-king setup, the less flexible borders of the two bases can make the centre of the mattress feel much firmer. You might notice this in bases that flex or are already worn out.

If your foundation, box spring, or slat system flexes, your mattress will feel softer than it should, especially where you're sleeping. In this case, the flexing base responds to your body weight, and then the mattress reacts to your pressure — creating "too much" contouring. The easiest way to test this is to tip the mattress up and off of the frame and walk on the base to see if it moves. Alternatively, one person can lie on the mattress while the other looks underneath to inspect any bowing. 

If you're using a platform bed, make sure that the support beams are approximately 2" wide, spaced no more than 3" apart, and that there is appropriate centre support. Thin slats or widely spaced ones may not be supportive enough. 

If you really want to know if the base is the issue, test the mattress directly on the floor (space permitting).

Need a new mattress foundation? Shop the Juno Mattress Foundation

3. Uneven mattress expansion after unboxing

Solution: wait 48 hours 

If the mattress doesn't eventually settle flat and evenly, contact our customer care team

A noticeable hump in your mattress can be related to one of three separate issues:  

1. Your mattress is only getting broken in where you sleep 

Solution: break in your mattress evenly

For the mattress to be the same firmness throughout, the middle must be deliberately broken in so that the foam layers are softened, just like they are under where you sleep. 

Try lying on the affected area to flatten the hump. .This will help the mattress layers soften up and help the middle feel a little less distinct in firmness than the sides.

If you always sleep on the same side of the bed, rotate the mattress every 3–6 months.

2. Your base is affecting the feel of your mattress

Solution: inspect your base

Take a look at the base that you're using, especially if you didn't replace your existing support system with the purchase of your new mattress. As a general note: wire grid platform beds and box springs are NOT suitable for our mattresses. They do not have the surface area to support the mattress over time and can void your warranty. Any dips in the base will transfer through the mattress and you will feel it. 

If your base is a split-king setup, the less flexible borders of the two bases can make the centre of the mattress feel much firmer. You might notice this in bases that flex or are already worn out.

If your foundation, box spring, or slat system flexes, your mattress will feel softer than it should, especially where you're sleeping. In this case, the flexing base responds to your body weight, and then the mattress reacts to your pressure — creating "too much" contouring. The easiest way to test this is to tip the mattress up and off of the frame and walk on the base to see if it moves. Alternatively, one person can lie on the mattress while the other looks underneath to inspect any bowing. 

If you're using a platform bed, make sure that the support beams are approximately 2" wide, spaced no more than 3" apart, and that there is appropriate centre support. Thin slats or widely spaced ones may not be supportive enough. 

If you really want to know if the base is the issue, test the mattress directly on the floor (space permitting).

Need a new mattress foundation? Shop the Logan & Cove Mattress Foundation

3. Uneven mattress expansion after unboxing

Solution: wait 48 hours 

If the mattress doesn't eventually settle flat and evenly, contact our customer care team

A noticeable hump in your mattress can be related to one of three separate issues:  

1. Your mattress is only getting broken in where you sleep 

Solution: break in your mattress evenly

For the mattress to be the same firmness throughout, the middle must be deliberately broken in so that the foam layers are softened, just like they are under where you sleep. 

Walk, kneel, or crawl on the mattress for about 10 minutes a day for about a week. This will help the mattress layers soften up and help the middle feel a little less distinct in firmness than the sides.

If you always sleep on the same side of the bed, rotate the mattress every 3–6 months.

2. Your base is affecting the feel of your mattress

Solution: inspect your base

Take a look at the base that you're using, especially if you didn't replace your existing support system with the purchase of your new mattress. As a general note: wire grid platform beds and box springs are NOT suitable for our mattresses. They do not have the surface area to support the mattress over time and can void your warranty. Any dips in the base will transfer through the mattress and you will feel it. 

If your base is a split-king setup, the less flexible borders of the two bases can make the centre of the mattress feel much firmer. You might notice this in bases that flex or are already worn out.

If your foundation, box spring, or slat system flexes, your mattress will feel softer than it should, especially where you're sleeping. In this case, the flexing base responds to your body weight, and then the mattress reacts to your pressure — creating "too much" contouring. The easiest way to test this is to tip the mattress up and off of the frame and walk on the base to see if it moves. Alternatively, one person can lie on the mattress while the other looks underneath to inspect any bowing. 

If you're using a platform bed, make sure that the support beams are approximately 2" wide, spaced no more than 3" apart, and that there is appropriate centre support. Thin slats or widely spaced ones may not be supportive enough. 

If you really want to know if the base is the issue, test the mattress directly on the floor (space permitting).

Need a new mattress foundation? Shop the Novosbed Mattress Foundation

3. Uneven mattress expansion after unboxing

Solution: wait 48 hours 

If the mattress doesn't eventually settle flat and evenly, contact our customer care team

A noticeable hump in your mattress can be related to one of three separate issues:  

1. Your mattress is only getting broken in where you sleep 

Solution: break in your mattress evenly

For the mattress to be the same firmness throughout, the middle must be deliberately broken in so that the foam layers are softened, just like they are under where you sleep. 

Walk, kneel, or crawl on the mattress for about 10 minutes a day for about a week. This will help the mattress layers soften up and help the middle feel a little less distinct in firmness than the sides.

If you always sleep on the same side of the bed, rotate the mattress every 3–6 months.

2. Your base is affecting the feel of your mattress

Solution: inspect your base

Take a look at the base that you're using, especially if you didn't replace your existing support system with the purchase of your new mattress. As a general note: wire grid platform beds and box springs are NOT suitable for our mattresses. They do not have the surface area to support the mattress over time and can void your warranty. Any dips in the base will transfer through the mattress and you will feel it. 

If your base is a split-king setup, the less flexible borders of the two bases can make the centre of the mattress feel much firmer. You might notice this in bases that flex or are already worn out.

If your foundation, box spring, or slat system flexes, your mattress will feel softer than it should, especially where you're sleeping. In this case, the flexing base responds to your body weight, and then the mattress reacts to your pressure — creating "too much" contouring. The easiest way to test this is to tip the mattress up and off of the frame and walk on the base to see if it moves. Alternatively, one person can lie on the mattress while the other looks underneath to inspect any bowing. 

If you're using a platform bed, make sure that the support beams are approximately 2" wide, spaced no more than 3" apart, and that there is appropriate centre support. Thin slats or widely spaced ones may not be supportive enough. 

If you really want to know if the base is the issue, test the mattress directly on the floor (space permitting).

3. Uneven mattress expansion after unboxing

Solution: wait 48 hours 

If the mattress doesn't eventually settle flat and evenly, contact our customer care team