Truly the most luxurious mattress in the Natural Collection. The Ullswater Natural Silk 2900 has a combined spring count of 2900 from the pocket springs in the heart of the mattress and mini pocket springs in the pillowtop that help distribute weight evenly, minimising pressure on the body and resulting in an undisturbed night’s sleep. Cashmere and silk elevate the levels of plush comfort in this truly sumptuous mattress.