FABRIC: Cotton;Polyester Features: 1. U Convex Pouch Design ! 2. Keep Warm,Breathable ! 3. Widen Waistband ! Item Type: Sleepwear Bottoms Fabric Material: 95%Cotton 5%Polyester Closure Type: Elastic Waist Length: Ankle Length Waist:Mid Waist Design Features: Widen Waistband Season:Spring, Fall Occasion: Home, Casual Color:Gray,Black,Navy,White US Size:S, M,L,XL Package included: 1*Sleepwear 2.The size of these items are smaller than ordinary, we suggest buying a bigger one size.