One side for the crib, the other side for the toddler bed. Your little one will have a wealth of wonderful nights with this luxurious mattress from Simmons. 231 pocketed Beautyrest coils make it firm enough to care for a child"s back but comfortable enough to ensure a peaceful night"s sleep. Organic-blend cotton cover feels soft against your child"s skin, so no problem if the sheet slips a little during the night. All around reinforced border, rod edge protection and Innofoam corner protectors all work together to create a mattress that"s superior in stability and durability, providing long lasting firmness and support for your infant or toddler. The natural cotton fire protection wrap has no chemicals and is non-toxic.