Yoofoss Baby Sleep Sack 12-18 Months | TOG 2.5 Winter Wearable Blanket, 100% Organic Cotton, 2-Way Zipper

Cozy warmth for cooler nights

The Yoofoss Baby Sleep Sack is designed for winter comfort. Made from 100% organic cotton on the outside with a fluffy polyester filling, it feels soft against tiny skin while remaining breathable. The 3-layer construction, paired with a sleeveless cut, helps regulate temperature so your baby stays warm without overheating, fostering smoother sleep routines.

Safety, fit, and gentle movement

Safety matters. This sleep sack is CPSC-certified and features a carefully sized neckline with a snug fit to minimize movement or slipping. The sleeveless design also supports natural hip development while your child naps or sleeps.

Durability that lasts wash after wash

Yoofoss reinforces the quilted design for even fill distribution, preventing lumps and shifting. The result is a durable wearable blanket that withstands hundreds of washes and maintains its shape, with shrinkage kept under 2% after machine washing and low-heat drying.

Smart details for night-time routines

The two-way zipper opens from the bottom for easy diaper changes with minimal disruption. A zipper cover at the top protects delicate skin, helping your night routine stay smooth and calm.

Room temperature guidance and layering options

For rooms around 61°F to 68°F, you can layer under the sleep sack with warmer sleepwear as needed. The four sizes — S, M, L, and XL — cover infants and toddlers up to roughly 24 months, with a size chart to guide your choice before ordering.

Practical benefits at a glance

• Soft, breathable 100% organic cotton outer with plush filling for cozy comfort
• 3-layer breathable design plus sleeveless cut to help regulate temperature
• CPSC-certified safety with snug neckline and hip-friendly fit
• Durable quilting that resists lumping and shrinks less than 2% over time

Care and maintenance

• Machine wash and tumble dry on low to maintain softness
• Follow size guidelines to ensure proper fit and performance