Woolino 4 Season Baby Sleeping Sack with Feet – Merino Wool & Organic Cotton Walker Sleep Sack (18-36m) Butterfly

All-season comfort for growing babies

Meet a sleep solution designed to grow with your child. The Woolino 4 Season Baby Sleeping Sack with feet blends a soft merino wool lining with a GOTS certified organic cotton outer, delivering a cozy, breathable feel across the year. The Butterfly design adds a gentle, playful touch to bedtime routines.

Premium fabrics for lasting comfort

• 100% natural merino wool lining that is luxuriously soft and temperature regulating
• GOTS certified organic cotton outer for breathable, durable softness against delicate skin
• Foot openings and a generous fit support mobility when awake and warmth during sleep

All-season versatility for growing kids

Designed to replace loose blankets, this sack supports year‑round use in three sizes: 6-18 months, 18-36 months, and 3-4T. The merino layer helps maintain comfortable warmth as conditions change, enabling one sleep solution across seasons.

• Three convenient sizes that align with your child’s growth
• Use over regular sleepwear to replace loose blankets
• Bottom zipper for quick diaper changes and easy dressing

Smart design, easy care, trusted brand

The Woolino sleeping sack features bottom-zip access for convenience, and is machine-washable for busy households. It’s backed by a six-month warranty from a US-based company with US customer service. Woolino has earned recognition as a leading maker of baby sleeping bags in the USA and Canada since 2010, offering reliability you can feel confident about.

• Bottom zip for easy diaper changes
• Machine-washable for simple care
• Six-month warranty with US support
• Reputable brand legacy in North America since 2010