100% Cotton Imported [ ltra Soft & Breathable 0.5 TOG Baby Sleep Sack, CPSC Certified ] Sosomi baby sleep sack is made of 100% premium pure cotton, soft and gentle on baby’s sensitive skin. Highly breathable to prevent overheating and underarm sweating, keeping baby cozy all night. CPSC certified for safe use, the lightweight 0.5 TOG sleeveless design fits newborns and toddlers for year-round wear. [ 2-Way Zipper for Easy Diaper Changes, Skin-Friendly Design ] This toddler sleep sack has a smooth 2-way zipper for quick nighttime diaper changes without disturbing sleep. Interior zipper guard and top collar cover protect baby’s delicate skin from irritation, making nightly care more convenient for parents. [ Safety-Lock Zipper & Wide Bottom for Healthy Hip Development ] Our newborn sleep sack comes with an auto safety-lock zipper to prevent accidental opening, ensuring all-night warmth and safety. The widened bottom offers ample legroom for free movement, supporting healthy hip development for active babies. [ 4 Sizes Fit 0-24 Months, Grows with Baby ] This baby sleep sack provides 4 sizes to cover all growth stages:Size S: 28in, fits 0-6 months, Size M: 31in, fits 6-12 months, Size L: 33in, fits 12-18 months, Size XL: 36in, fits 18-24 months. It grows with your baby for long-term use. [ Durable Machine Washable 3-Pack, Unisex Baby Essential ] Upgraded stitching ensures durability after repeated machine washes on low settings, no hand washing needed. This 3-pack sleep sack includes assorted patterns, unisex for baby boys and girls. It’s perfect for daily use and a practical gift for baby showers. Baby Sleep Sack &100% Organic Cotton: Soft, breathable, our baby sleep sack set made of 100% high quality organic cotton (OCS certified), is the ideal sleep sack for babies' sensitive skin. Safe Alternative to Bulky Blankets: 0.5 TOG wearable blanket. Wear alone in warm seasons or layer with pajamas for winter warmth. Reduces breathing risks from loose blankets, offering a safe, cozy sleep solution. Easy Diaper Changes: Our toddler sleeping bags feature a high-quality 2-way zipper that unzips from the bottom, allowing easy diaper changes without removing the sleep sack. Zipper protectors shield baby’s jaw and belly from scratches. Generously Sized & Roomy: Ample space for free leg movement supports healthy hip development. Safe for back, side and tummy sleepers. Satisfaction Guarantee: Sosomi swaddle blanket is undoubtedly the quintessential baby shower gift and Baby Registry must-have and for the modern safety-conscious mother.