Thank you for viewing. This is a listing for the One Piece dress from the Happy Set only. The mannequin size is size 9, so I've listed it as a size M. It's made of thin fabric without a lining. A petticoat is needed underneath. In winter, it would be nice to wear a turtleneck underneath. It's cute to wear with a vest or cardigan now. It has become wrinkled because it was folded and stored. Although it's unused, it's been stored for a long time and has wrinkles, so I've listed it as "Like New." There may be other oversights, so please understand that this item has been stored at home for a long time before purchasing.