Woolino 4-Season Baby Sleep Bag Sack (18-36mo) – Merino Wool & Organic Cotton, Night Sky

Year-round Comfort for Little Sleepers

The Woolino 4 Season Sleep Bag Sack is crafted to help create a calm, secure sleep environment for toddlers. By pairing a natural Australian merino wool lining with a soft GOTS certified organic cotton outer, this sleep bag offers breathable warmth that adapts to changing temperatures—all without bulky blankets.

Key benefits that may support your nights

• Premium merino wool lining delivers a gentle, skin-friendly feel with natural temperature balance for cooler nights and warmer rooms.
• GOTS certified organic cotton outer adds durability and breathability for daily wear and wash cycles.
• Year-round versatility keeps your child comfortably wrapped through all four seasons, reducing the need for extra layers.
• Foot openings invite natural movement when awake, while the overall fit keeps little feet tucked in when dreaming.
• Bottom zipper enables quick diaper changes without fully waking your child, helping preserve sleep continuity.
• Machine-washable design makes cleanup simple for busy families, supporting a tidy bedtime routine.

Materials, care, and design details

The interior features Australian merino wool for warmth and breathability, while the outer shell uses soft organic cotton. The combination is designed to feel comfortable against delicate skin and to stand up to regular washing.

• Care is straightforward with machine washing, supporting busy parents who value convenience.
• Night Sky color offers a soothing, modern look that fits crib and toddler-bed spaces alike.

Fit, sizes, and practical use

Available in three sizes — 6-18 months, 18-36 months, and 3-4T — the Woolino sleep bag provides generous length with room to tuck feet in for sleeping comfort. This design can replace loose blankets while your child grows, reducing risks associated with loose sleepwear.

Quality, warranty, and trusted support

With a 6-month warranty from a US company and US-based customer service, Woolino offers reassurance alongside a history as a leading baby sleep solution provider since 2010. The Night Sky option combines practicality with a premium, dependable sleeping companion.