Knirose Premium Soft Cotton Swaddle Sleep Sack — Arms Up Design, 2-Pack, 3-6 Months

Meet the Knirose Premium Soft Cotton Swaddle Sleep Sack, a practical 2-pack built for babies in the 3–6 month stage. Designed with an arms up concept, it mirrors a natural sleeping posture while delivering a gentle stretch that moves with your baby. Crafted from a soft 95% cotton and 5% elastane blend and rated with a TOG of 0.8, this wearable swaddle stays comfortable across seasons. The set offers a reassuring, secure feel that many parents appreciate during the night, helping your little one settle into sleep with ease.

Designed for natural sleep and growing confidence

In newborn sleep behavior, more than 90% of babies tend to keep their arms up near their head when placed on their back. The Arms Up design of the Knirose swaddle aligns with this instinct, providing a snug yet flexible fit that accommodates gentle movement. The result is a cozy, familiar atmosphere that can help lull baby through sleep cycles without feeling restricted.

• Arms-up design mirrors a baby’s natural position for a secure, comfortable feel
• Snug, womb-like fit supports soothing transitions between sleep stages
• Two-way zipper enables quick, minimally disturbing diaper changes during the night
• Growth-friendly: switch between arms-in, arms-out, or arms-free wear as baby grows
• Premium 4-way stretch fabric (95% cotton, 5% elastane) offers soft, flexible comfort
• TOG 0.8 provides versatile year-round comfort without overheating

Practical features you’ll appreciate

The side-to-bottom two-way zipper is designed for easy nighttime diaper changes and gentle on baby’s skin, while being neatly concealed. The design accommodates kicking and leg movement without sacrificing torso security. As babies begin to roll and explore, the swaddle can transition to an arms-out or fully wearable sleep sack, prolonging safe sleep habits without needing a whole new setup. This makes it a practical, long-lasting sleep solution for busy families.

Included in your 2-pack are two wearable swaddle sleep sacks sized for 3–6 months, giving you flexibility and coverage for days when one is in the wash. The fabric is soft against delicate skin and built to move with baby, not against them, helping you focus on restful routines rather than constant wardrobe swaps.