Boys I play Infant Toddler Fleece Sweatpants Size by inseam: 12mo:(10") 18mo:(11") 24mo:(13") 2T:(14") 3T:(15") 4T:(15.5") 5T:(20") Warm fleece sweatpant is made with 100% polyester Design has reinforced knees for extra protection! Made with fabrics that are Hypoallergenic and free of harsh chemicals! Made to keep your child warm and dry when the weather is chilly! Perfect for traveling or around the house fun!