




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.
Discover the Unnivoll fleece baby sleep sack, a cozy wearable blanket designed for warmth, safety, and easy nights. Made from soft 100% microfiber polyester, it offers a gentle touch for sensitive skin, while meeting key safety expectations to help you feel at ease during those early sleep hours.
The 2.0 tog rating is well suited for indoor fall and winter temperatures around 64-70°F (18-21°C). The exterior fleece has a plush, inviting feel, and the interior lining cocoons tiny arms and legs in a comforting layer of warmth without bulk.
The premium two-way zipper glides gently for quick diaper changes, while a zipper protector at the top shields the chin from scratches. This thoughtful detail keeps babies comfortable and helps parents attend to needs with minimal disruption.
The sack provides ample room for kicking, yet stays securely in place, supporting hip development and helping little ones stay warm during sleep. The long sleeves reduce cold exposure and allow free arm movement for exploration before bed.
Each purchase includes two sleep sacks. They are machine washable and can be tumble dried on low, making laundry simpler for busy families. Four size options (S, M, L, XL) accommodate growth from newborn to toddler.
Certified by the Consumer Product Safety Commission (CPSC), these sleep sacks emphasize a secure sleeping environment and durable construction that withstands regular washing and daily use.
Q: What age range is the Unnivoll fleece sleep sack designed for?
A: Sized S to XL (0–24 months) to fit height and weight as babies grow.
Q: How do I care for the fleece sleep sack?
A: Machine wash on a gentle cycle and tumble dry low to maintain softness.
Shipping (UK)
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