[Ideal for Baby's Sleep]: Our 0.5 tog sleep sacks use rayon from Bamboo, which is buttery soft, hypoallergenic, thermal regulating and sustainable. [Easy to Use & Care]: 2-Way YKK Zipper J-Shaped opens flat fully or unzips the lower half for quicker diaper changes and line drying. Our wearable blanket baby is Machine Washable. [Roomy & Longer Wear]: Extra Leg Room for kicking (hip healthy) and room to grow, but cannot be kicked off. Keeps your baby cozy all year round. [Safety above All]: Zipper garage to protect baby's face from chafing. Arm and Neck Openings sized with latest research. Fabric and filling rigorously tested against 1,000+ substances for top safety. [Great Idea for Baby Shower]: This sleep bag with superior quality, unisex color makes it a great idea for every little girl or boy. S for newborns (0-6 months), M for infants (6-18 months), and L for toddlers (18-36 months, 2T-3T). Discover ultimate comfort and safety with our 0.5 Tog Sleep Sacks. Crafted from Certified rayon made from bamboo, skin-friendly and sustainable. The 2-Way YKK Zipper and J-Shaped design make this baby sleep bag easy to use, with quick diaper changes and line drying facilitated. Offering extra leg room and room to grow, these sleep sacks keep your baby cozy year-round. Safety is prioritized with features like a zipper garage and carefully sized openings. Rigorously tested against 1,000+ substances, our sleepsacks ensure top-notch safety.These unisex sleep sacks come in three sizes: S for newborns (0-3 months, 3-6 months), M for infants (6-18 months), and L for toddlers (18-36 months, 2T-3T).