Bedroom furniture: Get a children’s house wooden bed frame. Material: Constructed from a solid slatted wooden bed frame. Treehouse: Designed in the shape of a treehouse for adding a unique touch and focal point to your child’s room. Mattress : Upgrade for a memory foam mattress with a 15cm density. Colours: In a choice of pine, grey or white. Dimensions: (L) 1960mm x (W) 975mm x (H) 1415mm.