Bomio Toddlers Baby Boys Girls Cotton Warm Tights, Various Patterns and Sizes Available High quality and durable toddler cotton tights. Material 80% cotton, 17% nylon, 3% spandex. Cozy and comfortable with added stretch for a perfect fit. Size 3-6 months: for height 24-26 inches (62-68 cm), for weight 12-17 lb (5.5-8 kg) Size 6-12 months: for height 29-31 inches (74-80 cm), for weight 15-22 lb (7-10 kg) Size 12-18 months: for height 33-36 inches (86-92 cm), for weight 22-29.5 lb (10-13.5 kg)