The Perch Nest stands about 4'2" tall, at least a foot shorter than a typical loft bed, making it a perfect first bunk that allows for goodnight kisses and an increased sense of security. While both of its orientations fit a twin mattress (or two), it's full of possibilities: As a loft bed with ladder, children ages 6+ can sleep on the top bunk, with either a play space or a floor-level mattress below, and; As a canopy bed, it's perfectly cozy and can fit an optional add-on trundle bed below.; Usea standard Twin-Size Mattresswith a thickness not greater than 6" (Do not use a box spring.) Features GREENGUARD Gold certified; Sustainably produced in Europe in an FSC certified facility; Made of FSC Baltic birch plywood and eco-MDF ; Finishes are non-toxic, water-based and free of VOC health hazards ; Made under European environmental standards ; Packaging made of recycled cardboard; Responsible recycling through licensed collecting facilities ; Meets all US, Canadian, Australian and European safety standards ; The CPSC recommends the loft for children 6 and older; Weight limit for the loft is 250 lbs; Sturdy frame and solid rails on top bunk; Angled ladder, with safety tread for safer climbing; Lower than a conventional loft bed, improving accessibility; Can be constructed as either a loft or canopy bed; Specifications Assembly required; Loft mattress must be no more than 6" thick; Both loft and canopy take a standard twin mattress (not included); All furniture sales are final;.