Hyke & Byke Katahdin 15F 4-Season Ultralight Sleeping Bag – Long

Overview: Katahdin 15F Sleeping Bag by Hyke & Byke

Engineered for adventurous souls who chase four-season temps, the Katahdin 15F sleeping bag blends warmth with ultralight design. The bag is built to handle damp nights and variable weather while keeping bulk to a minimum. With a dedicated long version, it accommodates taller sleepers without sacrificing comfort, making it a strong choice for thru-hiking, backpacking, and camping trips where space and weight matter.

Warmth, insulation, and protection

Inside, the bag uses WR 625-fill synthetic insulation paired with a revolutionary ClusterLoft base. This combination aims to deliver reliable warmth around 15°F while remaining responsive to shifting temperatures. The exterior and lining are designed to resist wet conditions thanks to hydrophobic treatment and a durable fabric system, so you can rest with a bit more confidence on damp nights.

• 625 fill power synthetic insulation with ClusterLoft base for a warm, lightweight feel.
• Optimized for cold nights yet adaptable to milder days on the trail.
• Long version weighs about 3.13 lbs, balancing warmth with portability.
• DWR-coated 400T nylon liner resists moisture and wear.
• Large YKK zipper with anti-snag slider, Velcro, drawstring, and horizontal baffles.
• Long length accommodates up to 6'6" with a roomy shoulder and footbox.
• Includes a stuff sack for easy packing and transport.

Why this bag stands out for your next adventure

For hikers and campers who value warmth without excess weight, the Katahdin 15F offers a practical balance of materials and design. The shell’s water-repellent treatment helps during misty mornings or damp campsites, while the 400T ripstop nylon liner provides a sturdy feel against restless nights. The generous long size ensures that taller sleepers don’t feel cramped, allowing for natural movement and a more restful night after a day on the trail. While no sleeping bag can guarantee specific results in every condition, the Katahdin 15F is built to support a comfortable night’s sleep in cool-to-cold environments while you focus on your outdoor plans.

Hyke & Byke, a USA-based brand, emphasizes practical, durable camping gear designed for real-world adventures. This sleeping bag aligns with that ethos—combining thoughtful features with a straightforward, user-friendly construction that aims to meet the needs of hikers, campers, and backpackers alike.