Designed for sleepers who need maximum support, the Sealy Columbia Ortho Extra Firm Mattress delivers a robust, stabilising sleep surface that helps to promote healthy spinal alignment night after night. Made in the UK exclusively for Bensons for Beds, this orthopaedic mattress is ideal for those who prefer an ultra-firm feel with advanced pressure relief.At the heart of the mattress is Sealy's PostureTech Core Support spring system, engineered to provide responsive support. The springs progressively firm up as pressure increases, helping to evenly distribute weight and reduce strain across the body. Enhanced further by the central zoning PowerPack, extra reinforcement is focused on the hips and lower back as these areas can benefit most from additional support in an extra firm mattress.The sleeping surface is finished with a luxury Belgian damask cover, offering a smooth, breathable and hard-wearing feel. Smartex® fibres actively help to regulate temperature, drawing away excess heat and moisture to keep you cool and dry throughout the night. Inside, ReNew fibres, made from 76% recycled PET plastics, improve airflow and breathability while providing a durable and more sustainable comfort layer.For a cleaner sleep environment, the fabric is treated with ProShield®, a natural anti-allergen treatment endorsed by Allergy UK, helping to protect against allergens and promote healthier sleep.Built to last, EdgeGuard technology strengthens the mattress edges, reducing roll-off and maximising the usable sleep surface from edge to edge. The mattress is hand-tufted for a firmer, more supportive finish and features an easy-care non-turn design, requiring simple regular rotation in line with the care guide.With a 27cm depth, an extra firm comfort rating, and a free 5-year guarantee* for added reassurance, the Sealy Columbia Ortho Extra Firm Mattress is a dependable choice for those seeking uncompromising support and long-term comfort.Also available in a firmer-but-gentler feel as the Sealy Columbia Ortho Firm Support Mattress.*T&Cs apply.