The Love to Dream Arm Warmers add extra warmth to your childs sleeping bags without over heating them. Perfect for those cooler nights. Can be worn over sleeping bags or over regular clothes when out and about during those cooler days. Composition: Cotton Outer, 100% natural bamboo filling Available Sizes: 4 -12 months (6 - 9.5 kg) 12 - 18 months (9.5 - 11 kg) 18 - 36 months (11 - 14.5 kg) Features: Warn over sleeping bags or regular clothing for added warmth without overheating Attached Mittens to help keep hands warm Sizing: 4 - 12 months, 12 - 18 months, 18 -36 months