Single size. This item was stored after a quick pre-wash before use. Although it has not been used, there may be wrinkles from storage and some clumping of the padding. I personally don't think so, but... White on the reverse side. It has elastic straps at the four corners. This is a stored item. Please refrain from purchasing if you are sensitive to the condition, as perceptions of condition vary from person to person. It will be folded small for simple recycled packaging. No returns or exchanges.