Sealy Sleep Select Extra Firm King Size Mattress

Our firmest, most direct support.

The most solid feel in the collection: double OptiForm Extra Firm under a tight top, directly over PostureTech 2.0. Nothing to sink into, everything to support you.

Size: King Size (150cm x 200cm)
Firmness: Extra Firm, 9/10
Best for: Back sleepers, heavier builds and anyone who wants a solid, no-sink surface.

Why it's good for your back

• The firmest feel we offer. Two layers of OptiForm Extra Firm under a tight top give the most direct contact with the coil system.
• Even, deep-down support. PostureTech 2.0's unique geometry spreads weight evenly to help keep a natural posture.
• Strong sides. EdgeGuard keeps the perimeter firm and the whole surface usable.
• Outstanding value. Full PostureTech 2.0 technology and Sealy build quality at the collection's most accessible price.

PostureTech® 2.0: deep-down support that springs back

A higher-gauge wire and re-engineered head design give a steadier, more stable base. The coil's unique geometry responds to your shape and spreads your weight evenly, so hips and shoulders are supported rather than left to sink. Twice tempered and tested by Sealy scientists.

What's inside, layer by layer

1. Bio-based ProShield®: Endorsed by Allergy UK. A VOC-free treatment that keeps allergens at bay for a cleaner, fresher sleep.
2. Airstream Fibre: Nestled in the quilt for soft, lasting comfort, replacing the need for an extra foam layer.
3. EternityFibre: Works to reduce settlement, so the surface keeps looking and feeling its best.
4. Double OptiForm™ Extra Firm foam: Two extra-firm layers: the most solid surface in the collection.
5. PostureTech® 2.0 coil: Sealy's new spring: higher-gauge wire, re-engineered head, twice tempered. Unique geometry distributes weight evenly to support a natural, healthy posture.
6. EdgeGuard™: A single edge-support system surrounding the springs for stability, durability and a wider sleep surface.

EdgeGuard™

A single edge-support system surrounding the springs for stability, durability and a wider sleep surface.

Specification

• Construction: Tight Top
• Spring: PostureTech® 2.0
• Edge: EdgeGuard™
• Depth: 25 cm (approx.)
• Fabric: bio-based ProShield®, endorsed by Allergy UK
• Mattress only

Sealy Sleep Select mattresses are not medical devices and are not intended to diagnose, treat or cure any condition. Comfort and firmness preferences are personal. If you have a back condition, please take advice from your GP or a physiotherapist.