Blue Rainbow Bamboo Viscose Zippy – Little Sleepies
  • Details
  • Size Chart
  • Reviews

Comfy for them. Easy for you. The best sleepwear (or all day wear) around for your little ones. Now for the details:

  • Made of the softest, stretchiest bamboo viscose fabric that feels like butter. It is gentle on sensitive skin and perfect for year-round wear. Read more about why we love our fabric here.
  • Fold-over hand cuffs up to size 12-18 months. Protect your little ones from scratching themselves without having to worry about those silly mitts that never stay on.
  • Fold-over foot cuffs on all sizes. Instantly turn the romper into a footie and back again. Cover those little feet when they go to sleep without having to worry about sizing constraints of a traditional footie.
  • Double zipper. Use the bottom zipper pull for those middle of the night diaper changes and you can easily take out baby’s legs vs having to totally undress them!
  • No snaps, buttons or interior tags. Easy for you, comfy for baby!
  • Extra length. Simply roll up the arms/legs as needed. This, combined with the foot cuffs and extra stretchy fabric allows sizing to be very flexible. 
  • No chemicals. Do you know most pajamas are treated with harsh chemicals that make them flame-resistant? Ours are designed to fit snugly in accordance with all CPSC regulations.

  • 95% viscose from bamboo; 5% spandex. Machine wash on cold.

Little Sleepies is proud to donate a portion of each and every sale to Alex's Lemonade Stand Foundation for Childhood Cancer.

Babies grow SO fast! That's why we designed our sleepwear to be extra flexible in sizing. All of our styles have extra length (easily roll up any extra), foldable foot cuffs (traditional footies are so limiting) and super stretch for longer wear! They are designed to fit snug in accordance with all CPSC guidelines (as they are not treated with any nasty chemicals!). Read more about the breathability and benefits of our fabric here.

The below guides are based on feedback from hundreds of customers.

We recommend sticking to true size/age for the Zippy - there is room to grow and no need to size up.



Weight range


Up to 18”

Under 8 lbs



8-12 lbs

0-3 months


12-15 lbs

3-6 months


15-18 lbs

6-12 months


18-22 lbs

12-18 months


22-26 lbs

18-24 months


26-30 lbs



30-32 lbs



32-35 lbs

If you need other specific measurements or a sizing recommendation, don't hesitate to contact us.

Customer Reviews

Based on 16 reviews
Love them!

My little guy fits in these jammies so well!!! And as a mom I love how soft and buttery the material is! Such good quality !

Love it!

It is extremely soft and I absolutely love the pattern! It’s very unique! I also love how the footsie part can be folded open or closed, whereas, others it only does that for the hands. I plan to order the same zippy in a bigger size when my baby grows!

Softest, sweetest jammies!

I am in love with the zipper jams we got from little Sleepies. They are so soft and stretchy, and our little girl has a lot of roll to grow into them.

Soft and Buttery

I finally decided to try these and I'm so glad I did. They're just such a higher quality than you can find in the big box stores. My son is 11 months and starting to walk a lot so it's helpful to be able to full his feet out. The material is very thin but extremely soft. I worried about it being enough in the winter but with his sleep sack he seems to be warm in the morning. He is 75th percentile for height and I did find that based on the size chart I got the suggested size and it juuuuuust fits, so keep that in mind if your baby is larger. LOVE these and just ordered more :)

Happy 2 month old

I received a Lil Sleepies for my newborn and he loved it! It was a pumpkin themed sleepie and so cute! When I saw he would not be able to wear it for too much longer, I went online and ordered the next size up. I live how stretchy the fabric is and breathable. It is super soft to touch and just makes me want to snuggle him al night. The zipper provides for really easy access for diaper changes. I will be ordering more!