




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 CosyDiary Merino Wool & Organic Cotton Sleep Sack brings together a plush inner layer of 100% Australian Merino wool with a gentle outer shell of 100% organic cotton. This thoughtful pairing delivers ultra-soft comfort against a baby’s delicate skin, while providing warmth without bulk. With no polyester or synthetic fills, the design keeps fabrics breathable and free of common irritants, supporting a calm, cozy vibe during naps and night-time.
Built for year‑round use, the natural properties of Merino wool help regulate temperature and maintain a comfortable microclimate. In cooler nights, the inner wool provides a warm layer; on warmer evenings, its breathability helps prevent overheating. The result is a versatile sleep solution that adapts to your baby’s changing needs across seasons and environments.
Size is truly universal, designed to accommodate babies from about 2 months up to around 2 years, so you don’t have to frequently switch sizes. The design features a thoughtful mix of elements to support quick dressing, easy diaper changes, and safe transfers between settings:
Designed for real-life routines, this sleep sack balances softness with durability. The organic cotton outer shell offers a soft touch for regular wear, while the Merino wool interior keeps its comforting feel after repeated washes (please follow care instructions to preserve softness and fit). The result is a practical, season-spanning sleeping solution that supports comfortable sleep without making promises, just possibilities for a restful night.
Q: What ages and sizing does the CosyDiary Sleep Sack cover?
A: Designed for babies from about 2 months up to 24 months, with a universal size and adjustable snaps for a secure fit.
Q: What materials is the sleep sack made from and does it meet safety standards?
A: Inner layer: 100% Australian Merino wool; outer shell: 100% organic cotton; no polyester. It also meets US infant sleepwear safety standards.
Shipping (UK)
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