The perfect complement in comfort to the Classic Bed, The Hybrid Mattress is crafted with 11" of high-quality, long-lasting materials. Breathable, pressure-relieving, and sustainable all in one. Designed specifically for the Classic Bed with an innovative combination of memory foam and pocketed coils. GREENGUARD Gold certified with a 15-year warranty. | The Hybrid Mattress - Size: Twin XL | Thuma