Can baby move their arms up?

Hi Lauren, Thank you for contacting Happiest Baby. We're happy to help! All SNOO sacks have armholes at the shoulders for comfortability, so if your baby prefers to sleep with their arms free during naps and nights, you can certainly do that. Older babies (usually around 4-5 months) have more coordination and can sleep well with one or both hands-free. We hope this helps! Please do not hesitate to reach out if we can be of any additional assistance.

This says it is 100% cottony but the tag says one of the shells is polyester?

Hi Sarah, Thank you for contacting Happiest Baby! Our swaddle sacks are made with 100% GOTS certified organic cotton + a bit of polyester mesh (the mesh feature reduces overheating). Please let us know if you have additional questions.

How can you tell when to size up besides the baby’a weight?

If the Sleepea swaddle appears to be snug length/width-wise then it may be time to size up.

Can just one arm be left out of the swaddle ? I'm looking to transition my 3 month old baby out of his swaddle

Yes! These swaddles are great because you tuck both, one, or leave both arms out. The shoulder area has snaps to close the swaddle if you want to keep your baby’s arms in. We used these to transition our son around 3 months. He now sleeps with both arms out at 5 months and we just ordered the next size up!

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Happiest Baby Sleepea Organic Cotton Baby Swaddle, X-Large

Product ID: 453533530

Details

Age Range (Description)
Baby
Blanket Form
Swaddle
Brand
Happiest Baby
Colour
Ivory Lemons
Material
95% Organic 5%
Pattern
Fruits

🌿100% organic cotton softness

🦴Healthy hip development approved

⏱️5-second quick swaddle

Description

🌙 Swaddle smarter, sleep longer — because every second counts!

ESCAPE PROOF CONVENIENT - Quiet Velcro and 2-way zipper for secure swaddling and easy midnight diaper changes.
ULTRA SOFT ORGANIC COTTON - Luxuriously gentle fabric that’s safe and breathable for delicate baby skin.
EFFORTLESS 5 SECOND SWADDLE - Wrap your baby securely in seconds—no fumbling, no stress.
PEDIATRICIAN DESIGNED SAFETY - Created by Dr. Harvey Karp with International Hip Dysplasia Institute approval for healthy hips.
PROMOTES LONGER BETTER SLEEP - Snug womb-like embrace reduces startle reflex and supports smooth transition to independent sleep.

The Happiest Baby Sleepea 5-Second Swaddle is a doctor-designed, award-winning baby swaddle made from 100% organic cotton. It features a quick, escape-proof wrap with breathable fabric and a 2-way zipper for easy diaper changes. Approved by the International Hip Dysplasia Institute, it promotes healthy hip development while enhancing infant sleep quality by mimicking the womb’s snug embrace.

Specifications

ASIN	B0CM29J9TH
Age Range Description	Baby
Blanket Form	Swaddle
Brand	Happiest Baby
Colour	Ivory Lemons
Country of Origin	USA
Customer Reviews	4.5 4.5 out of 5 stars (6,370)
Enclosure Material	95% Organic Cotton, 5% Elastane and Shell 2: 100% Polyester
Fabric Type	95% Organic Cotton, 5% Elastane and Shell 2: 100% Polyester
Fabric Warmth Description	low
Fill Material	Cotton
Item Dimensions L x W	68.6L x 34.3W Centimeters
Item Type Name	Baby Swaddle
Manufacturer	Happiest Baby
Model Name	Sleepea
Model number	7749SSXX164
Number of Items	1
Number of Packs	1
Pattern	Fruits
Product Care Instructions	Hand Wash Only
Product Features	Breathable
Recommended User Type	Baby
Recommended Uses For Product	Napping
Seasons	Summer
Size	X-Large
Style	Modern
Theme	Fruits
UPC	817720026735
Unit Count	1.0 Count
Water Resistance Level	Not Water Resistant

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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