---
product_id: 283761867
title: "Swaddle Sack with Arms Up Half-Length Sleeves and Mitten Cuffs,"
brand: "swaddledesigns"
price: "¥6278"
currency: JPY
in_stock: true
reviews_count: 7
url: https://www.desertcart.jp/products/283761867-swaddle-sack-with-arms-up-half-length-sleeves-and-mitten
store_origin: JP
region: Japan
---

# 2-way zipper for quick diaper changes 100% premium cotton knit TOG 0.7 for optimal sleep warmth Swaddle Sack with Arms Up Half-Length Sleeves and Mitten Cuffs,

**Brand:** swaddledesigns
**Price:** ¥6278
**Availability:** ✅ In Stock

## Summary

> 🌙 Elevate your baby’s sleep game with the ultimate transitional swaddle!

## Quick Answers

- **What is this?** Swaddle Sack with Arms Up Half-Length Sleeves and Mitten Cuffs, by swaddledesigns
- **How much does it cost?** ¥6278 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/283761867-swaddle-sack-with-arms-up-half-length-sleeves-and-mitten)

## Best For

- swaddledesigns enthusiasts

## Why This Product

- Trusted swaddledesigns brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Patented Safety & Comfort:** US Patent 11,812,795 ensures innovative design focused on safer, more restful sleep for newborns.
- • **Dual-Function Mitten Cuffs:** Foldover cuffs can be opened for self-soothing or closed to prevent facial scratches and reduce startle reflex.
- • **Effortless Care & Convenience:** Machine washable, lightweight (5.3 oz), and equipped with a 2-pull zipper for hassle-free diaper changes.
- • **Arms-Up Design for Self-Soothing:** Half-length sleeves with mitten cuffs help baby sleep better by partially suppressing startle reflex while allowing safe movement.
- • **Seamless Transition from Swaddle to Sleep Sack:** Snug yet hip-healthy fit supports natural baby positioning, easing the move from tight swaddling to wearable blanket freedom.

## Overview

The SwaddleDesigns Transitional Swaddle Sack in Blue Tiny Triangles is a 100% cotton, patented wearable blanket designed for newborns (6-14 lbs, 0-3 months). Featuring arms-up half-length sleeves and foldover mitten cuffs, it promotes safer, self-soothed sleep while supporting natural hip positioning. With a breathable 0.7 TOG knit and a 2-way zipper for easy diaper changes, it’s the perfect bridge from traditional swaddling to independent sleep.

## Description

SwaddleDesignsSwaddleDesigns Transitional Swaddle Sack, Arms Up Half-Length Sleeves & Mitten Cuffs, Swaddle for Newborn Transition to Baby Sleep Sack Wearable Blanket, Small, 0-3 month, 6-14 lb, Blue Tiny Triangles

## Features

- 100% Cotton
- Imported
- The TRANSITIONAL SWADDLE SACK allows baby to SELF-SOOTHE and promotes BETTER SLEEP and SAFER SLEEP. Perfect for babies who prefer to sleep with ARMS UP, babies who are starting to rollover, and babies able to break out of a traditional swaddle
- LITTLE SLEEVES with BIG PURPOSE. Arms Up Swaddle with 1/2-length sleeves and mitten cuffs closed provide partial suppression of Startle Reflex to help baby SLEEP BETTER; if baby rolls onto tummy, baby can push up to access air for SAFER SLEEP
- EASIEST way to move from a traditional swaddle to a wearable blanket. Transitional Swaddle Sack is not a tight swaddle nor a loose sack. Snug fitting and Hip Healthy design supports baby in natural position and flexed position to help baby feel secure
- FOLDOVER MITTEN CUFFS MAY BE WORN OPEN OR CLOSED; Caregiver can open one or both cuffs, so baby can SELF-SOOTHE, or close the cuffs to PROTECT BABY FROM FACIAL SCRATCHES and provide partial suppression of startle reflex.
- 100% Cotton. TOG 0.7 Soft stretchy cotton knit. 2-way zipper for easy diaper changes. Use baby weight to select size: Small 6-14 lbs 0-3 Mo; Medium 14-21 lbs 3-6 Mo; Large 21-24 lbs 6-9 Mo. Machine wash. Tumble dry. US Patent 11,812,795 WW patents online

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Premium Cotton Knit |
| Color | Blue Tiny Triangles |
| Brand | SwaddleDesigns |
| Special Feature | 2-pull Zipper, Arms Up Half-Length Sleeves, Mitten Cuffs, Patented Design |
| Style | Blue Tiny Triangles |
| Blanket Form | Swaddle |
| Age Range (Description) | Baby |
| Product Dimensions | 26"L x 20"W |
| Theme | Baby Safe Sleep |
| Pattern | Tiny Triangles |
| Recommended Uses For Product | Napping |
| Seasons | All |
| Fill Material | Cotton |
| Weave Type | Knit |
| Product Care Instructions | Machine Wash |
| Size | Small (6-14 Pound) |
| Fabric Type | 100% Cotton |
| Cartoon Character | Blue |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Item Weight | 0.33 Pounds |
| Item Thickness | 0.25 Inches |
| Fabric Warmth Description | 0.7 TOG For Moderate Environments |
| Water Resistance Level | Not Water Resistant |
| Model Name | Designs Transitional Swaddle Sack with Arms Up Half-Length Sleeves and Mitten Cuffs |
| UPC | 817606028952 |
| Manufacturer | AmazonUs/SWAN7 |
| Item model number | SD-749B-S |
| Target gender | Unisex |
| Maximum weight recommendation | 14 Pounds |
| Material Type | Premium Cotton Knit |
| Material Composition | 100% Cotton |
| Additional product features | 2-pull Zipper, Arms Up Half-Length Sleeves, Mitten Cuffs, Patented Design |
| Batteries required | No |
| Item Weight | 5.3 ounces |
| Country/Region of origin | China |

## Product Details

- **Material:** Premium Cotton Knit
- **Color:** Blue Tiny Triangles
- **Brand:** SwaddleDesigns
- **Special Feature:** 2-pull Zipper, Arms Up Half-Length Sleeves, Mitten Cuffs, Patented Design
- **Style:** Blue Tiny Triangles

## Images

![Swaddle Sack with Arms Up Half-Length Sleeves and Mitten Cuffs, - Image 1](https://m.media-amazon.com/images/I/71po7RL-+uL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It actually worked
*by T***T on February 17, 2025*

I’m not one to write reviews, never have actually so this is my first one but after a couples months of use I just had to leave my thoughts for those on the fence. My baby was very heavily reliant on swaddling to be able to sleep and had a really aggressive startle reflex so when trying to take it away it was a total nightmare. I decided to give this one a try after failing over and over to get him to sleep without a swaddle. I’m so glad I did cause he loves this transitional swaddle! Been about 3 months of using it and I’ve gotten him back in his own sleep space and taking naps independently again and having longer stretches of sleep (on days/nights I don’t use it cause it’s dirty he doesn’t sleep as long and wakes himself up all night). It’s contoured enough to feel “snug” but still has plenty of leg room and can still put his arms down but helps lessen the arm flailing a lot. Love the double zipper feature and it’s very soft and just thick enough to keep him warm but not overheat. I highly recommend this product for the parents out there struggling to transition out of a traditional swaddle. I got the green one for reference, I read other reviews that said different colors seem to have different fabric and construction and the green one seemed to have the best construction so I went with that one and am definitely gonna get a few more now that I know my baby likes it. Hope this helps

### ⭐⭐⭐⭐⭐ Works like magic
*by S***N on March 27, 2025*

Can't believe how perfect this design is. As a newborn, my little guy slept ok with arms-in swaddles. But he soon began to roll over into his side which woke him up. Around 7 or 8 weeks old, he was able to wiggle himself to the side of the bassinet, whack his head on the wall of it, and even topple all the way over onto his stomach. Without a swaddle, he simply wouldn't sleep. This transitional swaddle was EXACTLY what we needed! He can sleep soundly through the night. When he rolls on his side, his head rests on his arm. His arms keep him from falling over or hitting his head on the bassinet. He has the perfect balance of freedom and security. My husband and I have peace of mind that he won't suffocate face down. We couldn't be happier with the quality and design. Zippers and fabric are fabulous. Excited to buy a couple more!

### ⭐⭐⭐⭐⭐ Incredible transition swaddle
*by J***E on March 8, 2025*

Honestly can’t say enough good things about this. He loves being swaddled but was starting to roll. We tried this for the first time at night and it worked so well — he slept straight through! I was skeptical when I saw how much he could still move his arms but those half sleeves are amazing and suppress the startle just enough! It’s super soft fits him well and is way cheaper than some of the other options I saw.

## Frequently Bought Together

- SwaddleDesigns Transitional Swaddle Sack, Arms Up Half-Length Sleeves & Mitten Cuffs, Swaddle for Newborn Transition to Baby Sleep Sack Wearable Blanket, Small, 0-3 month, 6-14 lb, Blue Tiny Triangles
- Love to Dream Swaddle UP, Baby Sleep Sack, Self-Soothing Swaddles for Newborns, Improves Sleep, Snug Fit Helps Calm Startle Reflex, New Born Essentials for Baby, 1.0 TOG, 5-8.5 lbs, Rainbow
- Amazing Baby Transitional Swaddle Sack, Arms Up Half-Length Sleeves & Mitten Cuffs, Swaddle for Newborn Transition to Baby Sleep Sack Wearable Blanket, Small, 0-3 Month, 6-14 lb, On Safari

---

## 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/283761867-swaddle-sack-with-arms-up-half-length-sleeves-and-mitten](https://www.desertcart.jp/products/283761867-swaddle-sack-with-arms-up-half-length-sleeves-and-mitten)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-06-16*