Lined with a compression trunk for ultra comfort. These shorts are optimal for your active little one who enjoys the outdoors or can be their go to lounge short. Our Polyester (90%) Spandex (10%) material keeps these shorts lightweight and moisture wicking. Try them out with any of our Youth Tee Shirts or Youth Performance Hoodies.Liam is 8, 70lbs Wearing a Size MediumYouth Shorts Waist Inseam OutseamXSmall (4T)20-23" 3.5 12Small (5/6) 22-25" 4 12.5Medium (8) 24-27" 4.5 13Large (10/12) 26-29" 5 13.5XLarge (14/16) 28-31" 5.5 14