




Free standard shipping across the UK, with no minimum spend.
Free standard UK shipping on all orders. Orders are typically processed in 1–3 business days. The shipping policy estimates most UK deliveries at 5–10 business days; timings are estimates.
Tracking is provided where available. Read our shipping policy for details.
You can request a return within 30 days of receiving your order. Items must be unused, in their original condition and packaging. Hygiene and other exceptions apply.
Please contact us before sending anything back. See our returns and refunds policy for the full terms.
Deliveries to United Kingdom’s outer and remote regions may experience seasonal delays caused by severe weather or limited carrier availability. We appreciate your patience and recommend allowing additional time for your order to arrive safely.
The Yoofoss Baby Sleep Sack is a thoughtfully designed wearable blanket for infants aged 6 to 12 months. Made with 100% organic cotton outer layers and a soft inner fill, it feels gentle against delicate skin while offering breathable comfort through the night. The fabric is chosen to balance softness and durability, giving caregivers peace of mind as little ones grow and explore their sleep space.
With a 1.5 tog rating, it aims to strike a balance between insulation and air circulation for moderate room temperatures (approximately 69–73°F). The sleeveless cut keeps little arms free to explore comfort while the bell-shaped bottom provides roomy hip space for easy movement during sleep. This combination supports a natural sleeping posture without overheating, helping your baby settle into a cozy routine as the seasons change.
The sleep sack is designed for four-season use, making it suitable for autumn and winter nights as well as air-conditioned spaces in warmer months. It is machine washable and built to withstand hundreds of washes while maintaining color and shape.
Imagine a calm bedtime routine at home, a well-insulated layer for chilly nights, or a familiar travel companion for hotel stays. The sleeveless design helps regulate temperature while the extra room supports natural movement during sleep.
Available in S (0–6 months), M (6–12 months), L (12–18 months), and XL (18–24 months). Weight-based guidance helps you pick the best fit, reducing the chance of the sack riding up during sleep.
Q: Which size should I choose for my baby?
A: Sizes align with age and weight; start with M (6–12 months) and adjust to prevent riding up.
Q: How do I care for the Yoofoss sleep sack?
A: Machine wash cold, tumble dry low; fabric stays soft with repeated washes; shrinkage under 3%.
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