For active kids to change clothes. The outside is a crinkly material, and the inside is fleece, so it's warm. Used Uniqlo Kids Stretch Warm Easy Jogger Pants 140 Black Selling because they no longer fit. There are tears in the knee area, but they can still be worn. If you are interested, please contact me. Please check the photos for the tears before considering (photos 3-5). #Uniqlo #UNIQLO #kids #kids #StretchWarmEasyJoggerPants #ChildrensClothes #Simple