Stokke Sleepi Bed ExtensionStokke Sleepi Bed Extension kit converts the Stokke Sleepi Mini into the Stokke Sleepi Crib. Sleepi Mattress is not included. Specifications Extends your Stokke Sleepi Mini newborn crib into a baby crib. Maintains a familiar environment as your baby grows. Suitable for children up to 3 years. Extends bed to 127cm 50 in. Made from solid beech wood for durability. 7 year warranty. Dimensions and Weight 17. 7 x 29. 1 x 33. 9 20. 9 lbs. Whats included