KeaBabies Soothe Sleep Sacks, 2-pack, are ergonomically designed to keep your baby snug and comfortable through the night. Made of soft and breathable 0.5 TOG cotton, this lightweight, temperature-regulating swaddle sack is great for use all year-round. Our sleeping bag comes with practical smooth zipper for easy diapering and changing. This versatile wearable blanket can be used as a sleeping sack and is the perfect transitional swaddle sleep sack for sleep training your baby girls and boys. Ergonomically designed safe sleeping bag 0.5 TOG lightweight & temperature-regulating baby sleep sack Soft and breathable organic cotton (Certified by CU 1042833) Smooth zipper all round for easy diaper change Machine washable & dryer friendly swaddle sleepsack