97% Polyester, 3% Spandex Pull On closure Features: zebra print nightwear, button front, short sleeve Fabric has no stretch,but it's soft and comfortable Occasion: sleep, pajama party, loungewear, lingerie, nightwear and so on. Bust Size: (Small) 37.8 inch; (Medium) 39.4 inch; (Large) 41.7 inch; (X-Large) 44.1 inch Please refer to size measurement in the last item picture before ordering