Baby Swaddle Sleep Sack
Baby Swaddle Sleep Sack
Loved By Parents Across the UK & US
Easy Returns
Buy any 2 items — Get 10% OFF your total order
Buy any 3 items — get 15% OFF your total order
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Anti-Startle Sleep Sack – Secure, Comfortable & Designed for Better Sleep
Help your little one feel calm, cozy and secure with this anti-startle swaddle sleep sack. Designed to reduce the Moro reflex while allowing comfortable movement, it creates a snug sleeping environment that supports more restful naps and bedtime.
Made from soft cotton with an easy zip-up design, it's a practical essential for those early months.
Why Parents Love It
Anti-Startle Design
Helps reduce sudden arm movements that can wake sleeping babies.
Soft Breathable Cotton
Gentle on delicate skin and comfortable for year-round use.
Easy Zip Closure
Makes dressing, diaper changes and nighttime routines simple.
Snug Yet Comfortable Fit
Provides a secure feeling while allowing natural movement.
Perfect for Better Sleep
Designed to help babies settle more comfortably at bedtime.
Product Details
Material: Cotton
Style: Swaddle sleep sack
Fit: Secure newborn fit
Season: All Seasons
Gender: Unisex
Closure: Full-length zipper
Pattern: Solid color
Key Features: Anti-startle design, breathable fabric, soft feel, easy zip closure
Size Guide
| Size | Recommended Age | Baby Height | Baby Weight |
|---|---|---|---|
| 60 cm | 0–3M | Up to 60 cm (23.6 in) | 7 kg (15.4 lbs) |
| 68 cm | 3–6M | 60–68 cm (23.6–26.8 in) | 7–8 kg (15.4–17.6 lbs) |
| 75 cm | 6–9M | 68–75 cm (26.8–29.5 in) | 8–10 kg (17.6–22.0 lbs) |
Size Tip
We recommend choosing based on your baby's height rather than age.
If between sizes, choose one size up for longer use and added comfort.
Shipping and Returns
How long does delivery take?
Please allow 4–9 business days for delivery once dispatched depending on your location.
For more information please refer to our Shipping Page.
How do I make a return?
Easy 30 Day Returns
Please see our Returns Policy for more information
🖤Loved by Moms, Trusted by Families
Every Little Dresser order is carefully packed with love and joy, so parents can feel confident and little ones stay comfortable. Because your baby deserves clothing that feels as good as it looks.
✔ Packed with love and care
✔ Trusted by families across the UK & US
✔ Easy Returns