Franterd Boy Elastic Joggers Bottoms Baggy Harem Pants 100% Cotton Material: Cotton Blend. Size: 80 =Age 3-4Y, Waist: 44cm/17.33", Pants Length:44cm/17.33" Size: 90 =Age 4-5Y, Waist: 47cm/18.51", Pants Length:49cm/19.3" Size: 100 =Age 5-6Y, Waist: 50cm/19.69", Pants Length:54cm/21.26" NOTE: Please compare the detail sizes with yours before you buy!!! Use similar clothing to compare with the size.