Made for year-round comfort, our 1.7 TOG Sleep Bag—also known as a sleep sack—is the perfect weight to keep baby snug through cooler nights and transitional seasons. Crafted with a GOTS certified organic cotton exterior and hypoallergenic polyester fill, it’s ideal for room temperatures of 69–74°F (21–24°C). A side-to-bottom zipper allows for easy diaper changes, and underarm snaps on sizes 0–9 months ensure a secure fit as your little one grows. GOTS certified 100% organic cotton exterior Hypoallergenic polyester fill for added warmth 1.7 TOG for year-round comfort in cooler rooms Wraparound zipper for easy nighttime changes Adjustable underarm snaps (0–9m) for a snug fit Screen printed by hand with AZO-free dyes Shop our Sleep Bag collection.