This was a gift and was used for one season, then stored at home. The inside is made of towel fabric, so you don't have to worry about sweating. There is a stain on the inside, but it's not very noticeable. Please check the fourth photo. *This is a used item worn by a child and stored at home. We appreciate your understanding. *It will be folded for storage and shipped in a compact package. Thank you for your understanding.