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Infant Sleep Sack

Infant Sleep Sack

$42.99
TOG Rating
Color

The Sleepybelly Infant Sleep Sack combines soft organic cotton in a baby sleeping bag tailored for infants between 3-12 months old. Intended for arms-free sleep, it's your ideal progression beyond newborn swaddling, offering your little one a warm, secure resting surface without the hazard of loose bedding.

Featuring sleeves that can be removed, this infant sleep sack adapts to temperature needs—sleeves on for chilly spaces or sleeves off when it's warm, giving you a flexible baby sleeping bag for every season. Pick between 1.0 TOG and 2.5 TOG ratings based on your nursery climate and what your baby is wearing underneath.

The spacious upper section allows small feet and legs to flex, move and stretch freely, encouraging natural hip development. The gentle organic cotton is soft against delicate skin, with slight elasticity that keeps it comfortable for daily use.

Many caregivers appreciate the silent two-way WhisperZip feature, which unfastens from the base for simpler nappy changes at night while preserving warmth around baby's upper body. Its construction offers a firm fit across the shoulders, with secure openings at the collar and arms plus generous space across the bottom half.

Ideal for:

  • Newborn sleep sack
  • Baby sleepwear bag
  • Sleep sack for newborns 3-12 months
  • Organic cotton infant sleeping bag
  • Temperature-rated sleepwear for babies
  • Removable-sleeve infant sleep sack
  • Move from swaddling to sleeping bag
  • Sleepwear for variable room conditions

What makes parents choose it:

  • Fits infants aged 3-12 months
  • Removable sleeves for adjustable dressing
  • Available as 1.0 TOG or 2.5 TOG
  • Premium GOTS-certified organic cotton fabric
  • Roomy lower section supports natural hip development
  • Silent two-way WhisperZip enables convenient nappy access
  • Complies with AS/NZS 1249:2014 sleepwear standards
  • INPAA endorsed

Reserve for arms-free sleeping only. Never bundle a baby within a sleeping bag and avoid placing loose bedding over it. Always position baby on their back in a safe sleeping space.

Customer Reviews

4.8 Based on 6 reviews

Really well made. You can tell attention went into the details.

Andrew B.Verified buyer

Love it. Already recommended it to two friends.

Sarah P.

Fast shipping and great communication from the store. Smooth experience from start to finish.

Lucy H.Verified buyer

Does what it promises. Comfortable to use and well finished.

Daniel G.Verified buyer

Easy to order, quick delivery and the product matches the description.

Olivia H.Verified buyer

Nice product, decent price. Shipping updates kept me informed the whole time.

Nicole F.Verified buyer
THE Sleepybelly PROMISE

THE Sleepybelly PROMISE

Sleep On It For 30 Nights.

Love It, Or Your Money Back.

Try it at home, in your own bed for 30 nights. If it doesn't help you get a better sleep, we'll cover the return and give you a full refund.

  • Under 2% of customers return the pillow
  • Easy and free returns
  • No risk, no catch
  1. 01 NIGHTS 0-30

    Sleep on it in your own bed, for 30 nights or less.

  2. 02 NOT RIGHT FOR YOU

    Email us and we'll send you a prepaid return label.

  3. 03 DROP IT OFF

    Pack it back up and drop it at your local post office.

  4. 04 FULL REFUND

    Get all your money back in 2-7 business days.