Woolino Merino Wool & Organic Cotton Baby Sleep Sack 2-24 Months – Ultimate 4-Season Baby Sleeping Bag, Universal Size Wearable Blanket, 2-Way Zipper & Adjustable Fit, Year-Round Use – Sun

Price: $109.00
(as of Jul 26, 2026 20:59:19 UTC – Details)
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Product description

The Ultimate 4 Season Sleep Bag

100% Natural, wicking away moisture, regulating body temp, and an excellent value as it comes in a universal size that fits babies from 2 months to 2 years – the Woolino Ultimate Sleep Bag is the only wearable blanket your baby will need, right up until they turn two.

Features of the Ultimate Sleep Bag

All-Season Comfort

Made with superfine merino wool, keeping your little one at the perfect temperature all year round.

Peace of Mind

No more guessing which sleep sack to use. Your baby will always be cozy and safe.

Saves You Money

One bag for all seasons — no need to buy multiple TOG-rated sleep sacks.

Easy Care

Durable and machine-washable – designed for everyday convenience.

Better Sleep

Breathable, moisture wicking merino helps baby sleep soundly. More restful nights for everyone.

Why Choose a Woolino Ultimate 4 Season Sleep Bag?

1 All-Season Comfort 2 Peace of Mind 3 Saves You Money 4 Easy Care 5 Better Sleep

Perfect comfort for better sleep. Naturally. The Magic of Merino

Because of Merino wool’s unique ability to regulate body temperature, it helps keep your baby warm when it’s cold and cool when it’s hot. That temperature regulation means that your child will sleep comfortably throughout the night, year-round – and that means a better night’s sleep for you too.

Better and Longer Sleep

A study done by the University of Sydney has found that a better night’s sleep is achieved when sleeping in wool. Merino wool is the perfect fiber to have next to your child’s sensitive skin. It regulates temperature, manages moisture, is easy to care for, soft, and durable. It’s naturally perfect.

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Woolino 4 Season Ultimate Baby Sleep Bag

Woolino 4 Season sleeping bags or sacks made with merino wool and organic cotton

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Customer Reviews

4.7 out of 5 stars 4,034

4.7 out of 5 stars 1,176

4.8 out of 5 stars 373

4.7 out of 5 stars 809

4.3 out of 5 stars 25

Price

$109.00$109.00

$129.00$129.00

$93.00$93.00

$109.00$109.00

$93.00$93.00

Fabric

Merino Wool & Organic Cotton

Merino Wool & Organic Cotton

Merino Wool & Organic Cotton

Merino Wool & Organic Cotton

Merino Wool & Organic Cotton

Size

2 – 24 Months

2 – 4 Years

0-6 m, 6-18 m, 18-36 m

0-6 m, 6-18 m, 18-36 m, 3-4T

4 – 6 Years

Underarm Snaps to Adjust Fit

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Shoulder Snaps

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Safety-Belt Slots for Travel

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2-Way Zipper

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Replaces Loose Blankets in Bed

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4-Season Use

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100% Merino Wool Lining / 100% Organic Cotton Outer
Imported
#1 RATED Merino wool baby sleep sack – BEST-SELLING merino wool and organic cotton sleep sack since 2010, trusted by parents for safe sleep, comfort, and durability. Award-winning baby sleep bag (Creative Child Top Choice, Cribsie Award, Mom’s Choice Award)
SAFER AND BETTER SLEEP – Premium natural fabrics: 100% Australian merino wool lining, GOTS certified organic cotton outer. Luxuriously soft, temperature-regulating merino wool helps prevent overheating and chills, reducing wake-ups and supporting deeper, longer sleep for babies. Best sleep sack for cold nights, warm rooms, and fluctuating nursery temperatures
THE ONE AND ONLY baby sleeping bag your baby will need until they turn two. No TOG guesswork. One UNIVERSAL SIZE sleep sack fits 2 months to 2 years. Replaces multiple TOG sleep sacks as superfine merino wool provides year-round comfort
MAXIMUM VERSATILITY – Double shoulder snaps and two-way zipper for easy dressing and easy diaper changes; Seat-belt openings allow EASY TRANSFER from crib to stroller or car seat. Under-arm snaps allow this wearable blanket to grow with your baby and make it an effective swaddle transition product
TRUSTED QUALITY – Designed by a trusted US company and backed by an industry leading product warranty for your peace of mind. Made from 100% natural materials and fully OEKO-TEX STANDARD 100 certified (23.HUS.59156)