This is a PREORDER for bamboo. Our ETA is September. These are 95% bamboo viscose 5% spandex. They are 220 gsm for a thicker/more durable material while also being stretchy and comfortable! Zippers have fold over feet with grippers and all zippers have gold over hands as well. All zippers have a double zipper. these run large! Please size down 1 for a snug fit for zipper pajamas. For 2 piece, they run a little large as well. Please do not size up! please do not mix preorder items with in stock, your order will not ship until all preorder items are in stock! these are estimated to arrive in September. This is an estimate and can change!