The dual sided mattress that grows with your child8482twist8482 is the little green sheeps award winning cot bed mattress that offers the best support for your baby and child dual sided this 100 natural mattress is designed to provide your little one with the right support as they grow from baby to toddler and beyond awarded 5 stars as best value cot mattress by mother baby tried testeddual sided support for baby and toddler one side is firm as recommended for babies up to 12