Slate is a medium blue-grey with real depth — richer and more grounding than a pale neutral, it brings a quiet sense of structure to the nursery without leaning cold. This sturdy favorite is made from silky-soft rayon made from bamboo, with a breathable, temperature-regulating feel that makes the 1.0 TOG the right weight all year long. Best for rooms between 69–73°F, layer over a short-sleeved onesie on warmer nights, or add a footie pajama when temperatures dip closer to 69°F. A comfortable pick for little ones with delicate skin.

• AAP-compliant safe sleep — a wearable blanket that keeps loose bedding out of the crib for babies under 12 months
• Quilted 1.0 TOG construction — two quilted layers hold just the right warmth without overheating, season after season
• Silky-soft rayon made from bamboo — gentle on delicate skin, with a smooth feel that minimizes friction (Fabric: 97% Rayon made from Bamboo, 3% Spandex | Filling: 100% Polyester)
• OEKO-TEX Standard 100 certified — tested and certified to meet rigorous safety standards
• J-shaped double zipper with zipper garage — zips from top or bottom for diaper changes without disturbing sleep; covered pull protects baby's skin
• Hip-healthy design — roomy at the bottom so legs can assume the natural froggy position for healthy hip development
• Sizes XS–XL — fits littles from 7–50 lbs across five sizes, each cut intentionally long so your baby gets maximum wear before sizing up
• Builds a sleep association — consistent use signals bedtime and travels with you

Sizing: Always buy for your baby's current weight and height — a properly fitting sleep bag should be snug at the neck and arms, never loose. See our full size chart.

Care: Machine wash gentle with fragrance-free detergent; lay flat or hang to dry.