Woolino 4 Season Baby Sleep Bag with Feet – Merino Wool & Organic Cotton (Gray) | 6-18m, 18-36m, 3-4T

Meet the Woolino 4 Season Baby Sleep Bag with Feet in Gray—an all-season sleep solution designed to keep your little one cozy without the need for loose blankets. With a gentle balance of warmth and breathability, this sleep sack helps your child stay comfortable from nap time to night sleep, in a range of temperatures typical of modern homes. The open-foot design invites curious movement during awake moments, while the sleeping position stays snug and secure when your child drowses. Many parents notice that a consistent sleep surface reduces the fuss that often accompanies bedtime routines, creating calmer evenings for the whole family.

Premium fabrics for lasting comfort

• Australian Merino wool lining is natural, ultra-soft, and temperature-regulating for year-round comfort.
• Outer shell is GOTS-certified organic cotton, offering gentle breathability and durability.

All-season design you can trust

• Merino wool helps maintain a steady micro-climate, so you can use it across seasons.
• Available in three sizes—6-18m, 18-36m, and 3-4T—to accommodate growing toddlers.

Smart details for busy evenings

• Foot openings provide mobility during play and wrap easily when your child sleeps.
• Bottom zipper allows quick diaper changes without undressing your child.
• Machine-washable for busy families seeking practical care.

Quality you can count on: Woolino backs this product with a six-month warranty and U.S.-based customer service, reflecting the brand’s commitment to reliable, premium sleep gear for families. Since 2010, Woolino has been among the top-rated and best-selling baby sleep bags in North America, a testament to its focus on comfort, safety, and thoughtful design.

Real-life use scenarios abound: in a well-ventilated nursery, the sleep bag stays comfortably warm without overheating; during travel or trips to grandparents' homes, it folds compactly and travels well; and in rooms with air conditioning or variable climates, the merino lining adapts to keep your child feeling just right. While individual results vary, many parents appreciate the simplification of bedtime routines and the reassurance of a single, cozy sleep surface that grows with their child.