Size Large: 18-36 mos, 31-39”, 24-35 lb Shell 100% Cotton, Filling 100% Polyester COZY BABY SLEEPING SACK: breathable fabric & comforting cocoon shape = a restful night's sleep for all FAVORITE SLEEPING BAG DESIGN: Super cute printed wearable blanket, 100% cotton shell, soft quilted interior WINTER WEIGHT BABY SLEEPER: quilted duvet material, extra layer of warmth, TOG 2.5, Recommended room temp 64-74 DegreeF UNIQUE FEATURE: exclusive shoulder straps make placing a sleeping or standing baby in the sleep nest a cinch, high-quality reverse zipper EASY CARE: Machine washable and can be tumble dried on low heat Kept my baby warm & cozy all last winter. Only used for one season. I’m really good used condition.