The sleepers do NOT have any grip on the bottoms. She can not walk with out slipping. The older daughter says that her father does not like her in sleepers all day and her mother changes her when she goes home after daycare. I have never demanded the clothing, rather ASKED while explaining how she is unable to walk and play. She falls all the time because she is slipping. (Hardwood floors) The mother meets me at the school where I drop of a child and she drops off her daughter. Even in these cold temperatures she hands the child to me with only her arms in her sleepers, bare legs.