Sealy Tredwell Extra Firm Mattress is the firmest feel in the Elevate Ultra Collection, crafted for those who prefer a truly supportive, grounded sleep. Combining intelligent sleep technology with advanced comfort layers, it delivers deep, consistent support that adapts to your body for a more restorative nights rest. At its core is Sealys patented AlignSupport spring system, designed to sense your shape and respond with tailored, long-lasting support that helps maintain natural posture and skeletal alignment. Reinforced with UniCased XT edge support, the mattress offers a stable, edge-to-edge sleep surface with no roll-off feeling, while enhancing airflow for a fresher sleep environment. Comfort is carefully balanced with durability. Targeted pressure relief comes from the MemorySense ComfortCore, focused on the hips and lower back, while gel-infused and extra firm foam layers provide breathable, long-lasting comfort. Finished with a luxurious quilted surface and soft-touch fabric, Tredwell also features SmarTex technology to regulate temperature and ProShield protection for a cleaner, more hygienic sleep. Handmade in Britain and backed by a 7-year guarantee, Tredwell Extra Firm is built to deliver reliable performance night after night. Extra firm feel ideal for those who prefer strong, supportive comfort. Mattress depth 29cm. Key Features:. *Extra firm feel ideal for those who prefer strong, supportive comfort *AlignSupport coil system two-stage response for personalised support *UniCased XT edge support maximises sleep surface and prevents roll-off *MemorySense ComfortCore targeted pressure relief for hips and lower back *Gel-infused foam breathable comfort to help regulate temperature *BasePlank foundation enhances airflow and long-term durability *SmarTex fabric helps maintain a cool sleeping environment *ProShield protection guards against allergens for a fresher sleep *Quilted, soft-touch cover adds a layer of luxury and comfort *Four vertical handles easy to move and position *Handmade in Britain with a 7-year guarantee Dimensions:. *W 135cm x D 190cm x H 29cm - Double 135cm *W 90cm x D 190cm x H 29cm- Single 90cm *W 150cm x D 200cm x H 29cm - Kingsize 150cm *W 180cm x D 200cm x H 29cm - Superking 180cm Important Information:. Please note that pocket sprung mattresses must not be used with a base for which they are not designed. Slats on a bed frame should be no more than 70mm apart, to ensure the mattress receives adequate support. Failure to use an adequate base could invalidate the warranty from the manufacturer. Please check with us for more details.
