--- product_id: 453533530 title: "Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small)" brand: "happiest baby" price: "¥722" currency: JPY in_stock: false reviews_count: 5 url: https://www.desertcart.jp/products/453533530-happiest-baby-sleepea-5-second-swaddle-100-organic-cotton-baby store_origin: JP region: Japan --- # 100% organic cotton softness Healthy hip development approved 5-second quick swaddle Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) **Brand:** happiest baby **Price:** ¥722 **Availability:** ❌ Out of Stock ## Summary > 🌙 Swaddle smarter, sleep longer — because every second counts! ## Quick Answers - **What is this?** Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) by happiest baby - **How much does it cost?** ¥722 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/453533530-happiest-baby-sleepea-5-second-swaddle-100-organic-cotton-baby) ## Best For - happiest baby enthusiasts ## Why This Product - Trusted happiest baby brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **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. ## Overview 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. ## Description Sleepea is created by Dr. Harvey Karp, the pediatrician whose 5 S’s started the Swaddle Revolution ! Dr. Karp designed every detail with baby safety—and parent sanity—in mind. - This ultra-soft and breathable swaddle helps babies cry less…and sleep more. - The special inner band keeps even the trickiest little newborn from sneaking out an arm at 2 am! - The wrap is snug and secure around the arms, but relaxed and hip safe down below. - Our extra-quiet Velcro won’t wake your baby with the ripping sound so common with Velcro wraps. - The breathable mesh at the shoulders and legs prevents overheating. - A 2-way zipper makes middle-of-the-night diaper changes easier. And, Sleepea is 100% Certified Organic Cotton. Honestly, we’ve thought of it all! No wonder the NY Times listed Sleepea as the #1 swaddle for babies in America! Why Should You Swaddle Your Baby? Swaddling gives babies the snug embrace they love in the womb. By preventing startles and wild-hand nose-whacks, it will quickly reduce crying and boost your baby’s sleep. Sleepea does NOT work with SNOO and would not prevent risky rolling. ONLY use SNOO sack in SNOO with baby. ## Features - “#1 Swaddle” New York Times: Rated America’s best baby swaddle, our Sleepea was designed by top pediatrician and the world’s leading swaddling expert, Dr. Harvey Karp. Perfect for healthy, growing hips (International Hip Dysplasia Institute seal of approval). - 100% Organic Cotton: Made from luxuriously soft organic cotton that is safe for babies. Includes extra-quiet Velcro for escape-proof security and 2-way zipper that opens from top or bottom for easy midnight nappy changes. - More Infant Sleep: Our baby swaddle sack prevents startles and boosts babies’ sleep quality with special inner flaps that give the snug embrace your baby boy or girl loved in the womb. Arm openings can unsnap to allow for arms out. Great transitional swaddle for arms free independent sleep training. - “5-Second Baby Swaddle”: The Happiest Baby Sleepea Swaddle is the easiest, safest, fastest, escape-proof baby swaddle sleep sack. It promotes self-soothing and keeps babies sleeping longer than other swaddle wraps. Breathable mesh at shoulders and legs to reduce risky overheating. - Sleepea is not for use in SNOO Smart Sleeper and would not prevent risky rolling. In SNOO, please only use a SNOO Sack. ## Technical Specifications | Specification | Value | |---------------|-------| | Age Range Description | Baby | | Asin | B08Y3817BQ | | Blanket Form | Swaddle | | Brand | Happiest Baby | | Colour | Graphite Planets | | Customer Reviews | 4.5 4.5 out of 5 stars (6,431) 4.5 out of 5 stars | | Enclosure Material | 95% Organic Cotton, 5% Elastane shell 2: 100% Polyester | | Fabric Type | 95% Organic Cotton, 5% Elastane Shell 2: 100% Polyester | | Fabric Warmth Description | low | | Fill Material | Cotton | | Item Dimensions L X W | 24.8L x 20.3W Centimeters | | Item Thickness | 3.15 Centimetres | | Manufacturer | Happiest Baby | | Manufacturer Part Number | HU-XI-179 | | Model Name | Sleepea | | Model Number | 7749SSXX118 | | Number Of Items | 1 | | Pattern | Planets | | Product Care Instructions | Machine Wash | | Product Features | Breathable | | Recommended Uses For Product | Home | | Seasons | Summer | | Size | Small | | Style | Transitional | | Theme | Doctor | | Unit Count | 1.0 Count | | Upc | 817720023024 | | Weave Type | Plain | ## Product Details - **Material:** 95% Organic Cotton, 5% Elastane shell 2: 100% Polyester - **Colour:** Graphite Planets - **Brand:** Happiest Baby - **Special Feature:** Breathable - **Style:** Transitional - **Blanket Form:** Swaddle - **Age Range (Description):** Baby - **Product Dimensions:** 24.8L x 20.3W Centimeters - **Theme:** Doctor - **Pattern:** Planets ## Images ![Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) - Image 1](https://m.media-amazon.com/images/I/71qxQVBbkPL.jpg) ![Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) - Image 2](https://m.media-amazon.com/images/I/717lq9Pyo2L.jpg) ![Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) - Image 3](https://m.media-amazon.com/images/I/71jpDCA7kiL.jpg) ![Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) - Image 4](https://m.media-amazon.com/images/I/81Qt+A6hy6L.jpg) ![Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) - Image 5](https://m.media-amazon.com/images/I/61pgAbCMKfL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Can baby move their arms up?** A: 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. **Q: This says it is 100% cottony but the tag says one of the shells is polyester?** A: 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. **Q: How can you tell when to size up besides the baby’a weight?** A: If the Sleepea swaddle appears to be snug length/width-wise then it may be time to size up. **Q: Can just one arm be left out of the swaddle ? I'm looking to transition my 3 month old baby out of his swaddle** A: 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! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Molto efficace *by on Reviewed in Italy 12 October 2025* Ottimo prodotto per favorire il sonno del bambino. Lo abbiamo usato per diversi mesi e nostra figlia si è trovata benissimo.Bisogna vincere l'impressione iniziale (effetto "camicia di forza") e abituarsi all'idea, ma alla bimba non dava alcun fastidio e la faceva addormentare con maggiore facilità.Consigliato ### ⭐⭐⭐⭐⭐ Best swaddle *by on Reviewed in the United States 28 January 2021* We have tried a lot of swaddles in the last 4 months with twins and these are the best. They are easier than any other swaddle to put on and keep those little arms tucked in tight. One huge factor in our house is how noisy is it to do a middle of the night diaper change. We sleep our twins in footed sleepers for warmth and have found that regardless of what swaddle we buy the easy access for diaper changes does not work to get both legs out of the sleeper so you have to release the Velcro. Some companies use the worlds loudest Velcro that not only startles the half asleep baby on the changing table but also the fully asleep baby in the crib. These swaddles are the exact opposite. The Velcro is strong but yet quiet. We are currently sleeping our babies with one arm in and one out to work on transitioning both out. They still fit great and hold the arm inside down well while the their arm is free to move and doesn’t have a bunch of fabric under the armpit.I will say the only negative, not really a negative, is that there is a learning curve to this. Read the box when you get it and you will be fine. Placement of the baby is everything, if you try to Velcro them in at the shoulders you will have fabric bunched up at the face. You want to place baby shoulders above there they really belong and the Velcro will start at the armpits and go down to the hands. This will keep the fabric low and away from the face. ### ⭐⭐⭐⭐⭐ In Ordnung *by on Reviewed in Germany 22 July 2026* Gute Qualität aber musste es dennoch zurück schicken weil es meine Tochter nicht mochte ## Frequently Bought Together - Happiest Baby Sleepea 5-Second Swaddle - 100% Organic Cotton Baby Swaddle Blanket - Doctor Designed Promotes Healthy Hip Development (Graphite Planets, Small) - Medela Manual Harmony Single Hand Breast Pump with Flex Shields for Comfort & Expressing More Milk, 6 Count - Lansinoh Breast Milk Pre Sterilised Storage Bag -White,100 Pieces --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/453533530-happiest-baby-sleepea-5-second-swaddle-100-organic-cotton-baby](https://www.desertcart.jp/products/453533530-happiest-baby-sleepea-5-second-swaddle-100-organic-cotton-baby) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-03*