Ultralight Sleeping Bag Naturehike CW400 Down Hybrid Design 650FP Grey

Ultralight Sleeping Bag Naturehike CW400 is a high-performance insulation system designed for avid adventurers, suitable for three to four-season use across camping, hiking, and traveling journeys. It features a unique hybrid shape that integrates a snug-fitting mummy upper body for head warmth with a spacious rectangular lower body for foot mobility, ensuring flexibility on frosty trails. The bag is constructed from durable 400T 20D ripstop nylon, providing comfort and water resistance, and is equipped with sturdy YKK zippers and a total weight of 0.88 Kg. This specialized equipment is filled with 400g of premium 85% white duck down, utilizing 650 fill power to establish an efficient thermal barrier by trapping air within the down clusters to maintain a comfort rating of 4.7C (40.4F). This optimized warmth-to-weight ratio is vital for ultralight backpacking, technical outdoor shoes, and equipment setups, allowing users to significantly reduce pack volume while guaranteeing a restful sleep. At unfolded dimensions of 85x220, it ensures ultimate comfort and unparalleled insulation, making it a reliable piece of waterproof gear for extensive outdoor expeditions.

Features

• Hybrid design: Combines a mummy upper body for head warmth with a rectangular lower body to enhance foot mobility.
• Premium insulation: Filled with 400g of 85% high-quality white duck down, offering superior warmth with a 650 fill power rating.
• Durable build: Constructed from 400T 20D ripstop nylon for comfort and effective water resistance against the elements.
• Temperature optimized: Engineered for performance in three to four-season conditions, offering a transition limit down to -0.4C (31.2F).
• Reliable hardware: Equipped with sturdy YKK zippers for smooth operation and long-lasting durability in demanding outdoor environments.
• Compact portability: Weighs only 0.88 Kg and compresses down to a folded size of 18*35 for easy backpacking and travel.
• Versatile application: Ideal for frosty trails, camping under the stars, or as a comfortable option for hotel stays.

A shoulder-season trek through the glacial valleys of the Prokletije Mountains in Albania requires gear that manages frosty trail conditions and rapid temperature drops effectively. This Ultralight Sleeping Bag Naturehike CW400 provides critical warmth when setting up camp in the remote, high-altitude meadows found throughout the Balkan Peninsula. Its 400T 20D ripstop nylon shell serves as a critical barrier against condensation and moisture, protecting the down insulation during overnight stays. The hybrid design allows hikers to keep the mummy hood tight against mountain drafts as temperatures approach the -0.4C (31.2F) limit, while utilizing the spacious envelope foot box for comfort.

Technical Specifications

Materials and Design

• Hybrid Chamber Construction: Features a specialized design with a mummy-style upper body for head warmth and a rectangular lower body to provide extensive foot mobility.
• Ripstop Nylon Shell: The exterior is crafted from 400T 20D ripstop nylon, engineered for durability, comfort, and crucial water resistance on frosty trails.
• White Duck Down Filling: Insulated with 400g of premium 85% white duck down, providing superior warmth at a 4.7C (40.4F) comfort rating with a 650 fill power.
• YKK Hardware: Equipped with sturdy YKK zippers for smooth operation and long-lasting performance in the field.
• Ultralight Specifications: Designed for efficiency with a total weight of 0.88 Kg and a compact folded size of 18*35 cm.

About Naturehike

Naturehike is a globally recognized manufacturer specializing in ultralight outdoor equipment and professional-grade camping gear suitable for expeditions and travel. The brand is dedicated to rigorous quality control standards and technical heritage to ensure reliability across all seasons and climates. Naturehike focuses on developing innovative sleeping systems, tents, hiking footwear, and accessories that balance minimal weight with high-performance metrics for outdoor enthusiasts.