100% Cotton 2-Pack – Made from soft, fine pure cotton, the Nyessmee baby sleep sack is breathable and helps wick away moisture, making it gentle enough for baby's sensitive skin. Each set includes 1 print & 1 solid design, offering a cute and convenient spare option that works well for both baby boy and girl—making it easy to rotate and a true nursery essential.

0.5 TOG Thermoregulation – Made with lightweight 0.5 TOG fabric, it provides a comfortably cool sleep environment for baby on warm spring and summer nights—just the right weight for gentle, breathable comfort. When temperatures drop in autumn and winter, simply layer a sleeper or a onesie underneath to easily adjust warmth, making it suitable for year-round use.

2-Way Zipper & Wide Leg Room – The roomy leg design supports natural hip movement and gives your baby plenty of space to crawl, kick, and move freely. The 2-way zipper allows for quick diaper changes from the bottom, helping baby stay asleep through the process—making it a favorite among new parents.

CPSC Certified, Worry-Free Choice – Nyessmee baby wearable blankets are CPSC-compliant and CPC-certified, meeting standards for fabric and workmanship. An internal zipper guard and top zipper cover add an extra layer of protection for baby's delicate skin-offering reliable comfort and warmth from the inside out, and tangible peace of mind for parents.

Machine Washable & Easy Care – This sleep bag is built for frequent washing—it actually gets softer with every wash, while maintaining its shape. Easy care for mom, cozy comfort for baby. Four sizes available: S, M, L, XL. Whether stocking up for your own baby, sharing at a baby shower, or gifting an expecting loved one, the Nyessmee sleep sack is well worth choosing.