When it comes to choosing a mattress, it's what's on the inside that counts. Featuring thick comfort layers of quilted foam support, the Chirorest firm mattress provides extra comfort. High-quality Bonnell springs provide superior support to maintain correct posture and built in edge support prevents the springs from collapsing, allowing you to lay closer to the edge. If you like sleeping on your stomach, this mattress can help keep your spine aligned for a comfortable night s sleep. Quilted Comfort A deep layer of quilted foam provides cushioning comfort for your whole body, supporting your body and moulding around your hips and shoulders, also promoting air circulation allowing your skin to breathe. (Base is sold separately) Quality Cover This mattress is covered in a high quality hardwearing knitted fabric. The fabric is knitted rather than woven, creating a 'stretchier' and softer feel. Edge Support Edge supports prevent the springs from collapsing around the edges of the mattress extending the sleeping area by 20%, allowing you to lay closer to the edge.