The obaby lily cot has 3 mattress base heights the top height allows easy access to your very young baby the mattress base can then be lowered two further positions as your child grows the teething rails provide a protective cover for your cot when your little one is teething and learning to chew features adjustable three position mattress base protective teething rails available in 4 colours requires mattress size 120 x 60cm dimensions external dimensions 124l x 69w x 99cmh weight