Not suitable or intended to be worn as sleepwear. The Teddy Bear onesie is one of our newest onesie and we created it to represent the nostalgia of the beautiful old antique teddy bears. It is made from thick fleece and is super warm and cosy, 100% Polyester. Machine Wash. Fastening: Zip. Loose. Long Sleeve. It has a zip and the top and bottom, making it easier for boys to visit the toilet, sorry girls! These styles are unique to us and we spend a lot of time on development to make sure it is a beautiful, well-made and represents good value for money. You will be delighted with the quality and how it looks. Good quality zips that do not break! We make the fitting generous, but we have also attached a chart to help you with fitting. Most people will buy a size bigger for plenty of growth room, but it's up to you. The cuffs will keep it from falling off if it's a little big.