Hello, I’m a granny needing to help my 6 year old granddaughter in Canada. She has severe eczema, scratches herself until she bleeds. I am looking for a company who makes onesies in 100% sustainable cotton suitable for a 6 year old. They need to open at the back and have feet with gripper soles. I searched and googled but without success - there seems to be nothing like this beyond age 4. Any advice much appreciated. Thank you Sue