Woolino 4 Season Walker Sleep Bag with Feet Merino Wool & Organic Cotton 3 - 4 T (Height 37-47" | Weight 32-46 lb) Night Sky - Constellation (blue, white) Premium Natural Fabrics: silky soft Australian merino wool lining & organic cotton outer Merino wool regulates body temperature unlike any other fiber, keeping baby warm when it's cold & cool when it's hot Can be used in all 4 seasons - suitable for room temperatures 63-77F (17-25C) Foot openings allow child to sleep with feet out Unzips from bottom for easy diaper changes Zipper-pull guards to protect child's skin Outer: 100% Organic Cotton Lining: 100% Merino Wool W1520 woolino.com Pit to pit 14” Length 39” (including feet cuffs) *Note: No nursery thermometer with dressing guide tags: 3T, 3 T, 4T, 4 T, toddler, toddlers, walkers, feet cuffs, sack, sacks, sleeping blanket, pajama, pajamas, pj, pjs, kid, kids, kid's, child, child's, children, childrens, children's, boy, boys, boy's, girl, girls, girl's, gender neutral, unisex, breathable, star, stars, constellations