How tight a fit does the mattress have to be?
Mattress sizes are all important to your baby’s safety in the cot. If the mattress is much too small there is a real danger of your baby’s head getting trapped between the mattress and the sides of the cot, or if it has a smaller gap, then perhaps a foot or hand can get trapped. If your mattress is too big, it either won’t fit or you won’t be able to operate the dropside (if your cot has one) and you may not be able to tuck bedding in the sides without making an uncomfortable bulge in the in mattress. British safety standards recommend that the mattress should not leave more than a 4cm gap between the mattress edge and the side of the cot.
Mattress sizes are all important to your baby’s safety in the cot. If the mattress is much too small there is a real danger of your baby’s head getting trapped between the mattress and the sides of the cot, or if it has a smaller gap, then perhaps a foot or hand can get trapped. If your mattress is too big, it either won’t fit or you won’t be able to operate the dropside (if your cot has one) and you may not be able to tuck bedding in the sides without making an uncomfortable bulge in the in mattress. British safety standards recommend that the mattress should not leave more than a 4cm gap between the mattress edge and the side of the cot. There is a confusion with how cot manufactures and cot mattress manufactures lable cot bed mattresses, this all stemmed for when cot mattresses were measured in inches the conversion is 139 x 69 many companies round them yo (like is )and call them 140 x 70 effectively it is a cot bed mattress and will fit your cot bed perfectly.
