Suitable for use with the John Lewis Stockholm cotbed, this is a supporting mattress with springs offering long-lasting comfort and support and is compatible with Boori products.The springs feature a felt layer for added comfort. With the John Lewis Spring mattresses we include an extra Innercare cover. The inner cover makes removing and replacing the outer cover quick and simple and can be used when the outer cover is in the wash. So in the middle of the night when you and your baby want to get back to sleep after a night time accident, the inner cover provides a suitable water resistant surface if the outer cover has had to be removed. This dent-resistant orthopaedic foam ensures the mattress stays more comfortable for longer, extending the life of the mattress and giving you more value for money over time. The mattress has a three dimensional fabric on one side, which promotes air circulation and assists breathability. It also draws fluid away from baby's body for comfort and safety. The bottom of the outer cover is made from a waterproof yet vapour-permeable fabric, excellent for the older child when toilet training, while also significantly reduces sweating. The inner cover is made from a non-sweat water repellent fabric, helping your little one stay comfortable throughout the night. Before opening the packaging please check the size of your mattress. Optimise baby's sleep by partnering your purchase with a mattress protector from our comprehensive range.