Experience ultimate comfort and warmth with the Naturehike "Snowbird" Mummy Duck Down Sleeping Bag. Designed for outdoor enthusiasts, this sleeping bag is crafted with meticulous attention to detail to ensure a cozy night's sleep, even in cold conditions.

Premium Down Insulation: The Snowbird Sleeping Bag features high-quality, ethically sourced 90% duck down with a loft of 650FP, ensuring superior warmth. This down provides excellent insulation for outdoor adventures.

C-Shaped Border Design: The bag employs a C-shaped border and a U-shaped hood design that follows ergonomic principles, effectively reducing heat loss. The YKK two-way zipper prevents snagging. The 6:4 ratio of upper and lower portions ensures more down covers the upper body for optimal warmth.

Wind Barrier Design: Enhanced wind barriers prevent cold spots at zipper seams. The wind barrier around the hood area prevents convective heat loss, enveloping the head tightly for increased warmth, especially in challenging weather conditions.

Lightweight and Compact: Weighing just around 2 pounds (0.91 kg), the Naturehike Snowbird Mummy Sleeping Bag is perfect for lightweight backpacking. The included compression sack measures φ1739 cm (φ6.715.4 inches), making it convenient to pack and saving space in your backpack.

Size and Temperature: Unfolded dimensions of 86.633.5 inches (22085 cm) accommodate taller individuals comfortably. The comfort temperature is rated at 44.6℉ (7℃), extreme temperature at 35.6℉ (2℃), and limit temperature at 15.8℉ (-9℃), ensuring comfort and performance in various conditions.