Product description: 1.Four Sizes: the pajama pants sizes S to XL, S for 6-8 years old, M for 9-10 years old, L for 11-12 years old, XL for 13-14 years old. 2.Quick Dry Material: 95%Polyester+ 5% Spandex. Quick-drying, durable, lightweight breathable , machine washable! 3.Elastic waist pants: Soft and pull on elasticized waistband, No matter he is big tall guy or slim fit guy, our pajama pants will fit perfectly! 4.Muti-Use: The pajama pants features a recycled polyester fabric that's both lightweight and quick-drying to help it seamlessly transition from surf to turf , in the beach or at home 5.Exquisite : Our Pajama Pants with stylish printing, these are a great attraction, when you go out for sports or stay at home. 6.Tips ! Due to manual measurement, please kindly allow 1-2 cm discrepancy. The digital images we display have the accurate color possible, however due to differences in computer monitors, we cannot be responsible for variations in color between the actual product and your screen. Wish you have a good shopping experience!