Polyester Imported THREE LAYERS OF BUTTERY SOFT FABRIC: Three layers of buttery soft, stretchy and breathable fabric. ACTUALLY PREMIUM QUALITY FABRIC TO ENSURE EXCEPTIONAL DURABILITY: We use only very long fibers, contrary to most alternatives in the market, to ensure exceptional durability of our fabric without pilling. Some of our customers have washed theirs more than 150 times and are still using it. PERFECT TEMPERATURE YEAR ROUND: Ideal TOG rating (1.70) for room temperatures between 65-75°F — no need to buy multiple sleep sacks. SUPPORT MUSCLE DEVELOPMENT: Fitted at the top and roomy at the bottom to allow free leg movement, promoting proper muscle and hip development. SKIN FRIENDLY: Tag-free neck and protective zipper guards and tabs prevent skin irritation. SAFE SLEEP ALTERNATIVE: Safer option than loose blankets, keeping your baby secure all night long. PROPRIETARY FABRIC: Proprietary viscose and poly blend. AMERICAN SPIRIT: Designed, assembled and packaged with love by a team of dedicated mums and dads in Salt Lake City, Utah. HASSLE FREE CLEANING: Machine washable for easy care, making cleanup simple and stress-free. Introducing the Copper Pearl Sleep Sack, the epitome of comfort, safety, and style for your little one's slumber. Crafted from a premium polyester and rayon blend, our sleep bags boast three layers of buttery soft fabric, providing unparalleled softness and stretch. Designed with baby's comfort in mind, our sleep bags feature ultra-soft, breathable fabric with just the right hint of stretch. You can rest assured that your baby will feel cozy and comfortable, snug as a bug in a rug, without the worry of loose blankets. With a 1.70 Thermal Overall Grade (TOG) rating, our sleep bags offer the ideal warmth for room temperatures between 65 – 75 degrees F. The sleeveless design ensures year-round usability, helping your baby sleep through the night soundly. Generously sized, our 0-6 month sleep bags measure 28 inches in length, with a width of 13 inches under the armpits and 18 inches at the widest section, providing ample room for your growing baby to move comfortably. Featuring a tag-free neck and a convenient top-to-bottom zipper, our sleep bags offer added comfort and ease of use. The wraparound zipper design ensures quick and hassle-free changes, while the unique zipper cover protects your baby's delicate skin. At Copper Pearl, we take pride in creating high-quality products that not only look great but also offer exceptional functionality. Our sleep bags are simple, modern, and guaranteed to elevate any nursery's style, adding a touch of sophistication to your baby's sleep space. Pairing perfectly with our range of Copper Pearl products, our trendy sleep bags flaunt your favorite prints and patterns. Coordinate effortlessly and create a cohesive and stylish nursery aesthetic that reflects your unique taste and style. Invest in Copper Pearl's Sleep Bag today and provide your baby with the ultimate sleep experience – cozy, safe, and stylish. The perfect baby shower gifts for any new parent, our sleep bags are a must-have addition baby essentials.