What are the best mattresses for heavier sleepers?

Here’s a list of the best mattresses for heavier sleepers, highlighting firmness, durability, and edge support for each option:

Koala Plus Mattress

Pros

• Customisable firmness with flippable comfort layer
• Excellent edge support prevents rolling off
• Durable, high-density foam resists long-term sagging
• Seasonal topper for year-round comfort

Cons

• No spring system for extra bounce
• May feel too firm for lighter sleepers

The Koala Plus Mattress offers a choice between medium-firm and firm support thanks to its double-sided Kloudcell® comfort layer, which can be adjusted by flipping the layer. This feature aids in maintaining spinal alignment and minimising excessive sinking, an important consideration for heavier sleepers. The high-density Kloudcell® foam construction is designed for durability, helping the mattress resist sagging and wear over time. StayPut Edge Support ensures stable edges, allowing sleepers to use the entire mattress surface without loss of support. Additionally, the flippable topper enables seasonal adjustment, catering to comfort and temperature regulation throughout the year.

SEALY Posturepedic Elevate (Firm/Ultra Firm)

Pros

• Firm and ultra-firm options for tailored support
• Advanced coil system adapts to weight
• Robust edge support maximises usable space
• High-quality materials ensure durability

Cons

• May be too rigid for those preferring softer beds
• Heavy construction can be hard to move

The Sealy Posturepedic Elevate is offered in Firm and Ultra Firm options, featuring the AlignSupport™ coil system designed to sense body weight and provide steady support, helping to promote natural spinal alignment for heavier sleepers. The mattress incorporates ComfortCore® SenseMaterial in its comfort layer, which adapts to body contours and aids in pressure relief. Built from durable materials, its construction resists sagging over time. The UniCased® XT edge support system enhances stability across the entire surface, reinforcing the perimeter to prevent roll-off and maintain support when sitting or lying near the edge.

TEMPUR Original 25 Mattress

Pros

• TEMPUR material moulds to body shape
• Firm feel aids spinal alignment
• Consistent, long-lasting support
• Reduces pressure points for comfort

Cons

• Weak edge support compared to innerspring models
• Price is higher than most alternatives

The TEMPUR Original 25 Mattress delivers a firm feel designed to support heavier sleepers by helping to maintain spinal alignment and minimising pressure points. Made with high-density TEMPUR material originally developed by NASA, the mattress conforms to the body’s shape, weight, and temperature, offering consistent support and resisting sagging. This material also contributes to the mattress’s overall durability, ensuring it maintains its structure over time. Edge support is provided by the mattress’s stable construction, which helps prevent excessive sinking or collapse when sitting or lying near the sides, offering reliable comfort across the entire surface.

Emma Diamond Hybrid Mattress

Pros

• Breathable design with graphite foam
• Hybrid support combines springs and foam
• Hypoallergenic cover reduces allergens
• Durable construction resists sagging

Cons

• Noticeable sinkage at the edges
• May not feel as firm as described

The Emma Diamond Hybrid Mattress is rated medium-soft by the manufacturer, but many users find it feels noticeably firmer, which may benefit heavier sleepers seeking support and proper spinal alignment. Its construction features a blend of adaptive comfort foam, Diamond Degree® graphite-infused foam for temperature regulation, and individually wrapped AeroFlex® pocket springs to offer dynamic support and breathability. Supportive HRX foam forms the base, enhancing durability for sustained use. While the mattress provides reliable central support, some reviews note less robust edge support, which could result in sinking when sitting or lying near the perimeter, an important factor for heavier individuals.

KING KOIL Chiro Reserve

Pros

• Firm and super firm options available
• Chiropractor-endorsed support system
• Reinforced edges prevent sagging
• Gel foam enhances breathability

Cons

• Can be too firm for lighter sleepers
• Heavier design makes moving difficult

The King Koil Chiro Reserve mattress is available in both firm and super firm options, designed to support proper spinal alignment and reduce excessive sinking. Its Reflex Advance Support System combines primary and active coils that adapt to the body’s shape, while Gel Comfort Foam and AeroQuilt layers enhance comfort and breathability. These materials are selected for their durability, helping the mattress maintain its structure over time under higher weight. Edge stability is provided by a high-density foam encasement, which reinforces the perimeter and helps prevent sagging when sitting or sleeping near the edge—an important consideration for heavier sleepers.

Yinahla Posture Gel Mattress

Pros

• Zoned pocket springs for targeted support
• Medical-grade gel reduces pressure points
• Exceptional durability and dense foam
• Eco-friendly, non-toxic materials

Cons

• May be too firm for some
• Premium price range

The Yinahla Posture Gel Mattress features a medium-firm feel, rated 7.5 out of 10 on the firmness scale, and is designed to provide sturdy support for heavier sleepers. Its 9-zone Ultra-Coil pocket spring system, combined with a medical-grade Posture Gel™ layer, helps maintain spinal alignment and reduces excessive sinking. The mattress is constructed with high-density Dunlop Opulence foam, significantly denser than standard foams, which enhances durability and resists sagging over time. GECA-certified eco-friendly materials add to its longevity. Additionally, the full comfort edge box construction offers strong edge support, ensuring stability along the perimeter.