Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug
Sleep Sack - Sunday Hug

Sleep Sack

Regular price$32.90
Shipping calculated at checkout.
  • Once your baby starts to roll over, there is danger in using the swaddle. 
  • In order for him to be able to use his arms to return to a position with his back on the crib, he needs a clothing like our sleep sack.
  • Our sleep sack is PERFECT to use for babies who have grown beyond infancy.
  • The large size makes it ideal for extended use.

Sunday Hug Sleep Sack


1. Fabric

  • Keeps baby's sensitive & delicate skin soft as its excellent for sweat absorption. 💦
  • Perfect for night-time usage or in an air-con environment.
  • The fabric won’t unravel or fray.
  • Material: 100% Premium Korean Cotton

2. Stylish and Versatile

  • Its modern and classy style fits any nursery or child bedroom.
  • The neutral colors look great with just about any decor.

3. Convenience

  • Eliminates the use of thick blankets for sleep.
  • The fabric material is thick enough to keep your child warm without making him or her feel stuffy and hot.
  • Uses lightweight fabric and features arm holes to increase airflow while still maintaining warmth from the body's natural heat.
  • Allows maximum movement while keeping your child comfortable.
  • The closed-ended bottom part of the Sleep Sack is comfortable without being too restrictive of movement.
  • Stays on through the night.

4. Snap Buttons

  • Secure hold & comfortable handling!
  • Shoulder: Simply unbutton the snaps and pull the sleep sack downwards for easy removal of the entire clothing.

5. Tags Outside

  • Sunday Hug's product tags are all thoughtfully placed outside so they don’t irritate a baby's skin. They’re meant to be cut off as well!

6. Non-toxic products

  • Sunday Hug Baby products only use certified and non-toxic products for fabrics, zippers, and labels.
  • All the products of Sunday Hug have completed the Self-regulatory Safety Certification Test conducted by the Certification Examination Institute in Korea.
  • Self-regulatory Safety Confirmation Application Certificate No.: CB014H419-0004


Orders are shipped on the next business day. It may take a few days to be shipped out if your order is placed after national holidays or on Fridays. Please note that Sunday Hug operates based on KST, UTC+9.


Once your order is dispatched, you will receive a confirmation email with a tracking number. You can check the status of delivery using the tracking number on the website of the delivery courier below.

DHL Express 


We ship orders through DHL Express and other couriers depending on the size and weight of your order and the country to which it is being delivered. Delivery typically takes 2 to 5 business days, but there can be unexpected delays due to weather conditions or the current COVID-19 pandemic.


Orders shipped outside of Korea may be subject to import taxes, customs duties and fees levied by the destination country. Additional charges for customs clearance must be fulfilled by the recipient; Sunday Hug has no control over these charges, nor can Sunday Hug predict what they may be.

Customs policies vary widely by country; please contact your local customs office for more information. Customs clearance procedures can cause delays beyond our original delivery estimates.


Our primary courier DHL cannot deliver to P.O. boxes or APO/FPO addresses.


Bamboo / Cotton

Bamboo / Cotton (Three-layered)

Size chart
Perfect Blend of Style and Comfort
Great sleep training assistant
Baby Sleep Sack

Breathable and maintains body temperature.
Allows maximum movement while keeping your child comfortable.
Stays on through the night.
Made from soft and durable materials.

Designed for families

Customer Reviews

Based on 102 reviews
Emi Yamakawa

Sleep Sack

Bailey Wilson
SO soft and convenient!

The shoulder straps and side zipper are an absolute game changer compared to normal sleep sacks, and SO soft! My only complaint is the bottom isn’t very wide so it’s hard for my son to spread his legs and wrap them around me while we rock to sleep, which bothers him

Thank you very much for the sharing your review.

If the bottom part of the sleep sack is not very wide, we suggest the next size for more mobility.

Trinh Tang
Super soft

I was so impressed and excited to feel how soft and buttery the sleep sacks were! I really wanted to find a larger replacement for my growing toddler and the size of the XL was great but it shrunk with first wash.

Jowin Lo

Sleep Sack

Ciarra Barrett
Obsessed with this sleep sack!

I had been using a sleep sack that swaddled my baby’s hands, but with him rolling we needed a new option. I was nervous switching him would disrupt his sleep but this sleep sack is amazing! It’s so soft and thick and hugs him in the right places so he feels like he’s still being snuggled! We’ve been using it for well over a week and he’s finally sleeping through the night!!!!!!

Mesh sleep sack and cotton sleep sack

My baby has been using Sunday hug zip swaddle since she was born. She used the mesh zip swaddle and cotton zip swaddle.
As she’s about to roll, I am transitioning her to sleep sack. The mesh sleep sack feels itchy to the skin when I tried on my own skin, even after washing with baby detergent. I’m a little disappointed that it is not smooth and soft.
The cotton sleep sack feels soft and smoother to the touch and looks thin enough for Singapore’s humid weather when it’s cold.

Will purchase the cotton sleep sack again!

Dear Thea,

Thank you for reviewing our Baby Sleep Sack. We're very happy that you like our Swaddle too.

. . . . . . . . . . . . . . . . . . . . . . . . . .

In regards to the Mesh Sleep Sack, we created it in a way that it would be soft and breathable on a baby's skin. It's made from 100% premium Korean cotton.

Just like our Mesh Swaddle, the fabric helps regulate body temperature so your baby will not sweat much and get heat rash and skin irritation even during the night. It is our first time to receive a comment about the texture and softness.

. . . . . . . . . . . . . . . . . . . . . . . . . .

All our products have completed the Self-regulatory Safety Certification Test conducted by the Certification Examination Institute in Korea. These are free from harmful chemicals that would cause danger.

Our Self-regulatory Safety Confirmation Application Certificate Number is CB014H419-0004.

. . . . . . . . . . . . . . . . . . . . . . . . . .

We hope that we would be able to serve you better and that you would be 100% satisfied next time.

Thank you for your trust in our brand.

Zaca A. Demei
Obsessed ❤️

My daughter’s favorite thing to wear! She usually never likes being wrapped in a blanket but she’s been loving this sleep sack.


My baby hasn't tried it yet but I think it's going to be useful!


I bought it right away when I saw it. It's good that it won't come off when kicked.

Reviewer avatar
Oh so cozy 🤍✨

The triple layer bamboo sleep sack is ✨EVERYTHING✨ I’ve been searching for and more. I love that this sleep sack is made of quality bamboo material, so you know it can be washed often without fabric pilling or other signs of wear including staining. I’m so happy with the thickness of the material - I wholeheartedly trust this to keep my toddler all bundled up and warm throughout the winter season. So in love with this!!🤍

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