IKEA Crib Converts to Toddler Bed

I'm selling an IKEA crib that converts into a toddler bed. It's designed for children from 15 months up to 50 lb (22.7 kg). Any mattress used in this crib should be at least 69 cm (27 1/4 in.) by 131 cm (51 5/8 in.) with a thickness not exceeding 15 cm (6 in).