Warm as a golden hour. The babysoy Mustard Sleep Sack is the long-sleeve wearable blanket in a rich, earthy mustard yellow — a warm, vintage-modern colorway that brings a cozy, glowing quality to the sleep essential designed to keep the newest little ones safe, warm, and perfectly comfortable all night long.

Why Families Love It

babysoy’s All Star Sleep Sack is built on the belief that the best blanket is one that cannot be kicked off. The long-sleeve wearable design envelops newborns in consistent warmth from shoulders to toes — no loose layers, no temperature drops in the night, just the deep, reliable comfort that lets everyone rest easy. Made from azlon from soybean fiber — babysoy’s sustainably derived, naturally porous soy material — it is supremely breathable and thermoregulating, keeping baby at a stable, comfortable warmth through every sleep cycle without overheating. Mustard brings a rich, grounding warmth to the sleep space that feels both modern and timeless — the kind of golden earthy tone that pairs beautifully with naturals, creams, and warm neutrals and makes the simplest nursery feel considered and complete. A wonderful baby shower gift, newborn essential, or the sleep sack in the color that feels as warm and golden as the earliest days with your little one. By babysoy.

Quick Specs

Color: Mustard. Style: Long-sleeve wearable blanket sleep sack. Material: Azlon from soybean fiber. Brand: babysoy.