Snuggle Up in Nature’s Softest Embrace Where comfort meets care! Each sleep sack is lovingly crafted from 100% organic bamboo fabric, providing your little one with an experience of unmatched softness and breathability. Plant-based, natural, lab-tested, and sustainably made, our Theta Pouch is crafted with the following features: · 100% organic premium bamboo outer layer · 100% organic premium bamboo filling · Hypoallergenic · Ergonomic design, following the International Institute of Hip Dysplasia guidelines for healthy hip development in babies · Exceptional moisture-absorbing ability · Signature SmartKnit Technology for excellent thermoregulation and super buttery-soft fabric · Wearable all year long, making it a 4-season sleep pouch Product Features: Zipper guard to protect the baby's neck Signature quiet "Serene" velcro for uninterrupted sleep during nighttime diaper changes Generous length to accommodate baby growth Superior stitching for enhanced durability Product Dimensions: XS: Newborn || 5-8 lbs || 22in S: 0-3 months || 7-12 lbs || 24in M: 3-6 months || 13-18 lbs || 28in L: 6-12 months || 17-23 lbs || 32in Sizes Newborn (XS) and 0-3m (S) have buttons to encourage swaddling. Sizes from 3-12m (M-L) do NOT have buttons since at this age babies start rolling so it may be a hazard to keep their arms inside per AAP guidelines. Certifications: GOTS Certified: Only organic materials and practices used OEKOS-TEX Certified: No harmful chemicals in our Theta Pouch CPSC Compliant: Rigorous lab inspections and testing with a CPC certificate Box Size Dimensions: cm: 29 x 24.5 x 6 cm inches: 11.41 x 9.64 x 2.36 in