Sleep Sack


Introducing our Sleep Sack sewing pattern, a practical and adaptable design that ensures warmth for your little ones right from birth up to their toddler years.

This pattern differentiates itself with a swaddle option for newborns, carefully designed to give the youngest infants a feeling of safety and comfort. As your child grows, you can opt for the additional sleeves feature to keep them warm during cooler nights.

One of the standout features of this pattern is its easy-access zipper design, making dressing and changes straightforward and stress-free. With its broad range of sizes, from Newborn to 3T, this could be the only sleep sack pattern you'll need, as it seamlessly adapts to your child's growth.

Regardless of your sewing skill level, our Sleep Sack pattern comes with clear instructions, making the creation process as simple as possible. With this pattern, you'll be creating a sleep sack that is not just comfortable and functional, but also unique to your child's needs.

Pattern Type:
PDF - letter/A0/Projector (Includes Layered Pattern and Instructions)

Skill Level:
Advanced Beginner

Sizes & Fabric Quantity:
NB - 3M: 1 Yard
6M - 24M: 1.25 Yards
2T -3T: 1.5 yards


  • Recommended fabrics include 1x1 rib knit, cotton spandex knit, or similar materials.
  • Zipper (2 way zipper highly recommended)
  • 2” Wide Hook and Loop Tape (Velcro is a brand name of the hook and loop

If you are printing from home, please print the 'Sleep Sack Letter' file!

Additional Sizes Examples and Pictures:
Click HERE

Additional Details:
Once payment has gone through you will be able to download your files immediately! You will also receive both a confirmation email and an email with a link to download your files. The confirmation email will give you the option to view your order where you can download your files. Lots of options! Be sure to check your promotions/spam/junk folders if the email with the file links doesn't come to your inbox.
Please don't share the file with anyone, though you are welcome to share a printed size with others.

If you have any issues feel free to email



Women's Size Chart


Mens Size Chart

Kids - Shorts/Tops/Dresses

Kids Shorts/Tops/Dresses Size Chart

Kids - Pants

Kids Pants Size Chart

Kids - Rompers/One piece swimsuits

size chart rompers


Lowland Kids Youth size chart


How do I receive my pattern? 
Right after purchasing, you will be directed to a confirmation page where you can download the files. You will also receive an email with a link to download your files. You can always log back in and see your files. 

It will come in .zip format so it's best to download and save it somewhere on your desktop! 

What kind of machine do I need to sew your patterns? 
A sewing machine is a must. If you are really wanting to get into making clothing though, I HIGHLY suggest getting a serger. Sergers make everything easier and cleaner. They also sew with knits a lot better than regular sewing machines! 

I also own a coverstitch machine which has been a game changer. It's definitely not necessary but it is an amazing machine to have if you want your clothes to have a professional finish. 

Can I sell clothes I make from your patterns?
Yes, as long as you are the one sewing the clothes (you may not outsource to a manufacturer or otherwise mass produce the clothes). We love seeing our designs come to life!

Interested in outsourcing or manufacturing? Email us at

We love to see your work and we appreciate when you tag #lowlandkids :)

Can I share patterns I buy?
No. We spend a lot of time and effort on each of our patterns and instructions. If people are interested in using Lowland Kids patterns you've acquired, please direct them to our website.

How Do I know what size to print? 
Once you download the pattern, open up the instructions and there is a sizing chart that will help you decide which size to print! If your kiddo is in between sizes you can always take the width of one size and length of another. 

Can a beginner sew your patterns?
Yes! We have patterns for beginners and experienced sewists alike. In the description of each pattern there will be a level of difficulty and it's up to you to decide!

Do you support Layers?
YES! Each pattern has layers incorporated so you can just deselect any sizes you don't want to print!