Unnivoll Fleece Baby Sleep Sack 6-12 Months – 1.0 Tog, Long Sleeve, 2-Way Zipper

Overview

The Unnivoll Fleece Baby Sleep Sack is designed for cozy, safe nights without the need for blankets. Made from 100% polyester microfleece, it offers a soft, skin-friendly feel and carries a Consumer Product Safety Commission (CPSC) certification for a secure sleeping environment.

With a 1.0 tog weight, this sleep sack is well-suited to indoor temperatures around 68–75°F (20–24°C), making it a reliable choice for spring and fall evenings. The plush inner and breathable outer layers work together to keep your baby comfortable and calm through the night.

Key benefits

• Soft, skin-friendly microfleece that remains comfortable night after night.
• 1.0 tog warmth paired with breathable fabric to suit typical indoor seasons.
• Premium two-way zipper for easy diaper changes, plus a zipper protector to cushion your baby's chin.
• Roomy design that allows kicking and movement while preventing the sleep sack from riding up.
• Long sleeves add warmth and allow free arm movement during sleep.
• Two-pack convenience with machine-washable care for busy parents.

Real-life use cases

In everyday routines, this sleep sack supports a calm bedtime and a smoother start to the night. The two-way zipper makes middle-of-the-night diaper changes quicker, while the roomy cut helps babies move naturally without being uncovered.

Parents often appreciate how the garment stays in place as babies stretch and wiggle, reducing the need for blankets and minimizing draft exposure. The fabric stays soft after multiple washes, helping maintain a gentle feel against delicate skin.

Care, sizing, and fit

Available in four sizes (S, M, L, XL) to cover ages from newborn through toddler stages. Please measure your baby’s height and weight and refer to the size chart before selecting. The sleep sacks are machine washable and can be dried on low heat for convenience.