Knirose Premium Arms Up Swaddle Sleep Sack – 2 Pack (6–12 Months)

Premium Arms Up Swaddle Sleep Sack by Knirose

Meet the Knirose Arms Up Sleep Sack, a two-pack designed for babies aged 6 to 12 months. The arms up design mirrors a natural sleeping position many infants prefer, delivering a snug, secure feel while allowing gentle movement. This approach works with your baby’s rhythms, potentially helping them settle between sleep cycles without feeling restricted.

Why this design appeals to busy parents

The arms up configuration aligns with a familiar, comforting posture, which may support a calmer start to bedtime. The fabric feels soft against delicate skin, and the snug fit resembles the embrace of a caregiver, helping your little one drift off with ease.

• Promotes a secure, womb-like feel for restful naps
• Supports a natural arms up position to ease transitions between sleep stages

Durability and growth are built in. The design allows babies to sleep with arms in, out, or free, making it easier to adapt as your infant grows and becomes more mobile. There’s plenty of room for kicking legs while maintaining a cozy, secure profile.

Smart, mom-friendly features for nighttime routines

diaper changes are simpler thanks to a dual zipper that runs from the side to the bottom. Hidden zippers reduce snagging, helping you change a diaper with minimal disruption when you’re managing late-night feeding or comforting your baby.

• Two-way zipper for quick, convenient diaper changes
• Hidden zipper design to prevent catches on delicate skin

The design supports movement and safe positioning. If your baby begins to roll, the arms in/out flexibility lets them adjust their position while keeping the lower body well covered. The extra room for kicking keeps comfort intact during sleep.

Materials, comfort, and year-round use

The sleep sack is crafted from a soft 95% cotton and 5% elastane blend, delivering a gentle, elastic feel that moves with your baby. With a TOG rating of 0.8, it offers a balanced warmth suitable for a variety of climates, helping maintain a comfortable sleep environment without overheating.

• 4-way stretch fabric for a snug yet flexible fit
• Breathable, soft touch that stays comfortable night after night

What you get and how to care for it

This 2-pack provides two sleep sacks designed to withstand nightly use. They’re easy to put on, take off, and wash, making them a practical addition to your baby’s sleep routine. The design supports your baby’s growth, offering transitions as needed.

Care is simple—machine washable and built to retain shape after multiple cycles, keeping the sleep sacks looking and feeling fresh for months.