Diawoo 4-Season Sleep Sack: Merino Wool & Organic Cotton, Adjustable 2–36 Months, Cloud Blue

Year-round comfort with premium Merino wool

The diawoo 4-Season Sleep Sack blends a breathable Merino wool exterior with a soft organic cotton lining to create a natural sleep cocoon. Merino fibers offer temperature regulation and moisture management, helping your baby stay cozy without overheating or feeling chilly as the seasons change.

Designed for real life, this sleep sack maintains a comfortable microclimate from nap time to night sleep, adapting to varying room temperatures and your baby’s activity. The result is a calm, peaceful environment that supports easier bed routines for busy families.

Grow-with-me sizing for lasting use

Built to accompany your child from two to 36 months, the design includes shoulder snaps that adjust for a snug fit in infancy and a roomier feel as your baby grows. This approach reduces the need to purchase multiple sacks while your child develops.

• Shoulder snaps provide a secure, customizable fit
• One sleep sack covers a wide growth window

Pure, gentle materials

Crafted with 100% Merino wool and a pure organic cotton lining, the sack delivers a soft, skin-friendly experience. The natural fibers are naturally hypoallergenic and free from synthetic fabrics or harsh chemicals, prioritizing clean comfort for delicate skin.

Smart, parent-friendly details

The two standout features support nighttime breaks and on-the-go transitions:

• Two-way zipper allows top-down or bottom-up diaper changes without waking baby
• Built-in car seat slot keeps the sack in place when moving between crib, car, and stroller

Travel-friendly by design

From crib to car to stroller, this sleep sack travels with your family. The car seat slot enables secure positioning, while the breathable fabric keeps your little one comfortable on longer outings or quick trips alike.

Care and use tips

To keep Merino fibers performing, follow gentle machine washing and low-heat drying guidelines. Fluff the wool after drying to restore loft and warmth without sacrificing softness, ensuring ongoing comfort night after night.