100% Cotton Imported 100% Organic Cotton: Soft, breathable, and gentle on sensitive skin, our sleep sack is made from high-quality cotton. Certified by the Global Organic Textile Standard (GOTS), we prioritize your baby’s comfort and safety. Smooth 2-Way Zipper: Our sleep sack double zipper makes midnight diaper change easily. The interior zipper guard and top zipper cover protect any scratches or discomfort from baby's delicate skins, ensuring the safety of your beloved baby. Roomy Places: The arm and neck openings sized for a perfect fit, the leg room carefully sized for baby to move around freely, but cannot be kicked off, so baby stays warm all night. The sleeping sack is great for promoting healthy hip development. 3-Pack Features: The package comes with 3 pack sleep sack for baby, so that baby always has one to wear to bed. The 3 colors are suitable for both baby boys and girls, which is perfect as baby registry. Essential Baby Item: Baby sleep sacks are good for everyday use, it will help baby get longer sound night’s sleep. There are 4 sizes available for your choices. S for 0-6 Months. M for 6-12 Months. L for 12-18 Months. XL for 18-24 Months. Soft and Breathable: 100% cotton. 0.5 TOG. Our sleep sack is super soft, lightweight and breathable! Perfect for warmer weather since it’s sleeveless and breathable. No risk of overheating.