Katahdin 15°F Ultralight Down Sleeping Bag – 4 Season Water-Resistant Mummy Sleeping Bag with 625 Fill Power Insulation for Backpacking, Hiking, Camping & Cold Weather Adventures

Katahdin 15°F Ultralight Down Sleeping Bag

Take on cold-weather adventures with confidence using the Katahdin 15°F Ultralight Down Sleeping Bag. Designed for backpackers, hikers, campers, and outdoor enthusiasts, this lightweight mummy sleeping bag combines exceptional warmth, packability, and durability for reliable performance in a wide range of outdoor conditions.

Why Choose the Katahdin 15°F Ultralight Sleeping Bag?

Featuring premium 625-fill-power ClusterLoft™ synthetic insulation, this sleeping bag provides impressive warmth in temperatures ranging from 15°F to 50°F. Unlike traditional down insulation, ClusterLoft™ maintains its insulating performance even in damp or humid conditions, making it an excellent choice for unpredictable weather and backcountry adventures.

At only 2.8 lbs, the Katahdin 15°F Ultralight Sleeping Bag delivers an outstanding warmth-to-weight ratio, helping you stay warm without adding unnecessary weight to your pack.

Advanced ClusterLoft™ Synthetic Insulation

ClusterLoft™ is a 100% vegan synthetic insulation engineered to mimic the loft, compressibility, and heat retention of premium down. With a tested loft equivalent to 625 fill power, it offers superior warmth, durability, and resistance to moisture compared to many traditional synthetic sleeping bags.

Benefits include:

• High loft and excellent heat retention

• Performs well in wet and humid environments

• Water-resistant and breathable

• More resistant to matting over time

• Lightweight and highly compressible

• Animal-free, vegan-friendly insulation

Built for Backpacking, Hiking & Camping

Constructed with durable 400T 20D ripstop nylon and a water-repellent DWR finish, this ultralight sleeping bag is designed to withstand rugged outdoor use. Horizontal baffle construction helps keep insulation evenly distributed throughout the bag, eliminating cold spots and ensuring consistent warmth all night long.

Premium features include:

• Adjustable drawcord hood for heat retention

• Hook-and-loop neck closure

• Durable YKK anti-snag zipper

• Internal gear pocket for essentials

• Compact compression sack included

• Lightweight mummy-style design

Ultra-Lightweight & Packable

When every ounce matters, the Katahdin sleeping bag delivers. The included compression sack allows the bag to pack down to approximately 11.5 inches long by 7.5 inches in diameter, making it easy to fit into backpacks, bikepacking setups, and camping gear systems.

The ergonomic mummy design comfortably fits users up to 6 feet tall while maximizing warmth and minimizing pack size.

Features & Benefits

• Temperature rating: 15°F to 50°F

• Premium 625-fill-power ClusterLoft™ synthetic insulation

• Lightweight at only 2.8 lbs

• Durable 400T 20D ripstop nylon shell

• Water-repellent DWR finish

• YKK anti-snag zipper

• Adjustable insulated hood

• Internal gear pocket with hook-and-loop closure

• Horizontal baffle construction

• Includes compression storage sack

• Vegan-friendly synthetic insulation

Perfect For

• Backpacking

• Thru-Hiking

• Camping

• Bikepacking

• Mountain Adventures

• Backcountry Travel

• Cold Weather Camping

• Outdoor Expeditions

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Whether you're trekking through the mountains, exploring backcountry trails, or camping in cooler temperatures, the Katahdin 15°F Ultralight Sleeping Bag delivers lightweight warmth, weather resistance, and dependable comfort for every adventure.