Woolino 4 Season Baby Sleep Bag with Feet Opening | Merino Wool & Organic Cotton – 3-4T

All-season comfort for your baby

The Woolino 4 Season Baby Sleep Bag with Feet Opening blends luxurious Merino wool with a soft organic cotton exterior to create a wearable sleep solution that grows with your child. It feels gentle next to the skin while helping maintain a steady microclimate through the night.

Because it uses 100% natural materials, you won’t need to juggle multiple season-specific products. Merino wool breathes, wicks moisture, and adapts to room temperature, delivering warmth when it’s cool and a cooler feel when it’s warmer. The outer layer uses GOTS-certified organic cotton for durability and a soft, skin-friendly touch that stands up to daily wear.

What’s inside and how it helps

• May support more restful nights for baby and caregivers thanks to ultra-soft, breathable Merino wool that helps regulate temperature and moisture.
• Premium fabrics: 100% Australian Merino wool lining; 100% GOTS-certified organic cotton outer; designed for breathability, skin-friendliness, and long-lasting use.
• All-season versatility: Merino wool adapts to room temps from 63–77°F (17–25°C), making it suitable year-round.
• Foot openings provide mobility when awake and warmth when sleeping; spacious design allows feet to tuck in for bed.
• Safety-first details: zipper-pull guards protect skin and a longer length that can accommodate growth.
• Bottom-access zipper for quick diaper changes while keeping baby comfortable.

Practical features you’ll notice in daily use make parenting a touch easier. The sleep bag is machine washable and can be tumble dried on a low setting, handy after diaper changes or morning messes. A nursery thermometer with a dressing guide is included to help you gauge layering for the evening.

Quality you can count on

Woolino’s Merino is Woolmark certified, and the outer cotton is GOTS certified, reflecting a commitment to ethical materials. The product carries OEKO-TEX STANDARD 100 certification, indicating tests for harmful substances and a safety-first approach from yarn to finish.

Used at home, in day care, or while traveling, this sleep sack provides a consistent, comfortable layering option without loose blankets. It pairs with regular sleepwear to replace extra layers, and its generous sizing supports growth while maintaining a snug sleep feel.

Sizes: Available in three sizes — 6-18 months, 18-36 months, and 3-4T — to grow with your child.