Hoppekids mattress with flax felt for playpenThe mattress for the playpen from Hoppekids protects your child from draught and cold while offering a comfortable surface. The mattress has a core of foam and a top layer of flax felt. Flax is a natural material which, besides from isolation, also prevents pressure marks in the mattress. Flax is very breathable and helps to maintain a good and comfortable temperature during the night, as well as removing sweat from the child. The mattress includes a