Transitional Swaddle Sack - Arms Up 1/2-length Sleeves & Mitten Cuffs, Heathered Gray With Polka Dot Trim
ColorArms Up 1/2-length Sleeves & Mitten Cuffs, Heathered Gray With Polka Dot Trim
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Description
• Designed by a nurse to help babies transition from snug swaddling to a sleep sack
• Features 1/2 length arms up sleeves with fold-over mitten cuffs that can be opened or closed
• Closed mitten cuffs provide partial suppression of the Moro (startle) reflex while allowing arm mobility
• Sleeves allow baby to push up and reposition their head if they roll over, offering a safer sleep option
• Deemed Hip Healthy by the International Hip Dysplasia Institute, allowing hips and knees to flex and move
• Easy to use: place arms in sleeves, legs in sack, and zip up
• Closed cuffs protect from facial scratches and can be opened later so baby may suck on fingers to self-soothe
• Sleeve opening at wrist; if arm fully extends the sleeve becomes elbow length
• Ergonomic design with a snug midsection to reassure and comfort baby
• 2-way/2-pull zipper allows diaper access by unzipping from the foot
• Convertible design suits babies who prefer arms up or who self-soothe with fingers
• Size selection based on body weight; do not size up: Small 6–14 lbs (0–3 months), Medium 14–21 lbs (3–6 months), Large 21–24 lbs (6–9 months)
• Made from 100% stretchy, breathable, soft premium cotton knit
• Designed in USA and imported with multiple patents
• For extra warmth, wear a cotton bodysuit underneath or a wearable blanket over top; avoid thick polyester fleece pajamas
• Features 1/2 length arms up sleeves with fold-over mitten cuffs that can be opened or closed
• Closed mitten cuffs provide partial suppression of the Moro (startle) reflex while allowing arm mobility
• Sleeves allow baby to push up and reposition their head if they roll over, offering a safer sleep option
• Deemed Hip Healthy by the International Hip Dysplasia Institute, allowing hips and knees to flex and move
• Easy to use: place arms in sleeves, legs in sack, and zip up
• Closed cuffs protect from facial scratches and can be opened later so baby may suck on fingers to self-soothe
• Sleeve opening at wrist; if arm fully extends the sleeve becomes elbow length
• Ergonomic design with a snug midsection to reassure and comfort baby
• 2-way/2-pull zipper allows diaper access by unzipping from the foot
• Convertible design suits babies who prefer arms up or who self-soothe with fingers
• Size selection based on body weight; do not size up: Small 6–14 lbs (0–3 months), Medium 14–21 lbs (3–6 months), Large 21–24 lbs (6–9 months)
• Made from 100% stretchy, breathable, soft premium cotton knit
• Designed in USA and imported with multiple patents
• For extra warmth, wear a cotton bodysuit underneath or a wearable blanket over top; avoid thick polyester fleece pajamas
About SwaddleDesigns
SwaddleDesigns makes swaddles, sleeping sacks and baby gifts in soft, breathable fabrics with modern prints, all aimed at one goal: helping new parents and babies get more sleep, safely. It was founded by Lynette Damir, a registered nurse and mother, after she visited families with new babies and found exhausted parents who were not swaddling because their blankets were the wrong size or too thick. The brand is explicit about supporting all families and birthing people.
Product Guide
Swaddle or sleep sack? Learn when to use each, how to transition, TOG ratings, and the safest options for your baby's age. Updated for 2026.
Read the full guide →