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All natural (un-dyed) sleeper bag. Zipper is also natural. Zipper tab at bottom of bag with a blue and green sail boat on it. CastleWare logo label  popping out from the lower side seam.

Sleeveless Organic Cotton Rib Knit Sleeper Bag TOG 1.5

Regular price $52.00 Sale

All CastleWare Baby Sleeper Bags run true to size with room for growth so there is no need to size up.
Sleeper Bag Length: top center of neck to bottom of bag

Size: Small 3-6 months Height: 23-26” Weight: 11-18 Lbs. Length: 26”
Size: Medium 6-12 months Height: 27-30” Weight: 18-24 Lbs. Length: 29”
Size: Large 12-18 months Height: 30-33” Weight: 24-28 Lbs. Length: 32”
Size: XL 18-24 months Height: 33-35” Weight: 28-32 Lbs. Length: 35”
Size: 3T Height: 36-41” Weight: 30-39 Lbs. Length: 38”
Size: 4 Height: 42-47” Weight: 36-45 Lbs. Length: 42”

As comfortable as your favorite tee shirt. Perfect for warmer weather when used alone or layer underneath with a footie or pajama set when the temps start to drop. Provides baby with a safe alternative to blankets that they cannot kick off. Signals baby that it is time to sleep.

Trusted: Made with GOTS certified organic cotton in the USA and is not treated with any chemical finishes. 

Premium Fabric: Mom tested and approved for softness, durability and breathability. Made in the USA Rib Knit with plenty of stretch across the width. Preshrunk in hot water only, prior to cutting and sewing.

Sustainable: Fabric is dyed with low impact, fiber-reactive dyes. Cleaner for the environment and baby. Natural is dye free. 

Safe: 100% cotton fabric allows the body to breathe. Baby won’t overheat. Reduces the likelihood of rashes and eczema outbreaks. 

Practical: This sleeper comes with a one-way reversed zipper to guarantee that your child cannot unzip it accidentally. By opening from the bottom to the top, it facilitates convenient and hassle-free access when it's time to change your baby's diaper.

TOG rating 1.5 (66-80 F)

Preshrunk Fabric: For best results, turn garment inside-out, machine wash warm, tumble or line dry. Do not use fabric softeners or dryer sheets. Your child's height is the most important measurement when deciding which size to buy. If your child's height is at the top end of the size range for their age, choose the next size up. 

Baby in video is wearing a size small (3-6 months) is 4 months old, 23" long and weighs 14 lbs. 

Baby Rib Knit A light/mid weight fabric. Soft with plenty of stretch across the width. Our most popular summer weight fabric by itself. Also a great innermost layer in the winter time.

TOG rating for Sleeveless Organic Cotton Rib Knit Sleeper Bag TOG 1.5
TOG ratingAmbient room temperature
1.566-80 F

The TOG rating describes the warmth or thermal resistance of a fabric, and is widely used in the UK and Europe to describe warmth levels of duvets, blankets and sleeping bags. The higher the TOG rating, the greater the warmth.

Customer Reviews

5.0 Based on 43 Reviews
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Kaylee W.
United States

Made in the USA!

We love the sleeper bag we got from Castleware. The material is perfect for spring and summer. I love that my baby will be able to wear this for a long while due to the great sizing. Nothing feel better to me than supporting a company with items made in the USA. This brand is completely underrated. I will be loyal to this company for what they have to offer for my baby boy.

Rebecca G.
United States United States

Lovely soft sleepsack

My son loves his cotton sleepsacks! They are so soft, light but not thin, and the color and material has held up great in the wash. Always happy with my purchases from Castleware.

Colette M.
United States United States


The sleeper bag is great! The cotton rib knit is pretty light, but perfect for summer or with warmer clothes underneath. I got the fleece one for colder weather.

Robyn G.
United States United States

Great sleep sack!

Super easy to put on! We also love the quality and that it’s organic. Baby seems to love it too.


finally a large enough sleep sack

this is one of the few brands that carry xl size sleep sack for babies that are big for their ages, very solid quality, like the zipper which is very sturdy and much better quality than most other sleep sack we have tried.

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