The REI Co-op Flash Sleeping Bag is a high-performance sleeping bag designed for backpackers and campers who need a reliable and comfortable solution for cold weather conditions. This 20°F/-7°C rated bag features advanced materials, a streamlined design, and a focus on weight savings to make it an excellent choice for thru-hikers, long-distance trekkers, and anyone looking for a premium sleeping bag.

Materials and Construction

The Flash Sleeping Bag is constructed with REI’s proprietary Polarguard 3D insulation, which provides exceptional warmth-to-weight ratio. The Polarguard 3D insulation features high-loft polyester fibers that trap warm air, while the unique 3D construction ensures excellent loft retention even when compressed.

The bag’s shell is made from a durable and water-resistant 20-denier nylon ripstop fabric with a DWR (durable water repellent) treatment. This ensures that rain and snow will not penetrate to the insulation, keeping you dry and warm throughout the night. The sleeping bag also features a robust 2-inch (5 cm) draft tube that prevents cold air from entering the bag.

Design and Features

The Flash Sleeping Bag boasts a streamlined design with a rectangular shape and a tapered footbox. This reduces heat loss by minimizing dead space and allowing for better insulation retention. The bag’s shoulder baffle is designed to prevent heat loss through the top of the bag, while the chest baffles help to reduce cold air from entering.

Other notable features include:

• A 3D-molded draft collar that seals in warmth
• Insulated side panels for added warmth and protection
• A built-in stuff sack with a reinforced carrying handle
• Compatible with REI’s Flash Air Pad for improved insulation

Temperature Rating

The REI Co-op Flash Sleeping Bag is rated to 20°F (-7°C), making it suitable for cold weather conditions. However, the actual performance will depend on various factors such as your personal warmth level, sleeping bag loft, and wind protection.

Weight and Packability

One of the standout features of the Flash Sleeping Bag is its exceptional weight-to-insulation ratio. Weighing in at just 2 pounds 1 ounce (940 grams) for the regular length version, this sleeping bag is an excellent choice for backpackers and thru-hikers who need to save weight without sacrificing performance.

Comparison to Competitors

When compared to other high-performance sleeping bags on the market, the REI Co-op Flash Sleeping Bag stands out for its exceptional warmth-to-weight ratio, durable construction, and water-resistant materials. While it may not be the lightest or most compact option available, the Flash Sleeping Bag offers a unique blend of performance, features, and value that makes it an excellent choice for serious outdoor enthusiasts.

Technical Specifications:

• Temperature Rating: 20°F (-7°C)
• Fill Power: 600-fill Polarguard 3D insulation
• Shell Material: 20-denier nylon ripstop with DWR treatment
• Draft Tube: 2-inch (5 cm) wide
• Shoulder Baffle: 3D-molded draft collar
• Weight: 2 pounds 1 ounce (940 grams), regular length version
• Pack Size: 4.5 x 7 inches (11 x 18 cm)

Conclusion

The REI Co-op Flash Sleeping Bag is a top-notch sleeping bag designed for serious outdoor enthusiasts who demand high-performance and durability in their gear. With its exceptional warmth-to-weight ratio, water-resistant materials, and streamlined design, this sleeping bag is an excellent choice for thru-hikers, long-distance trekkers, and anyone looking for a premium sleeping solution for cold weather conditions.

Recommendation

The REI Co-op Flash Sleeping Bag is recommended for:

• Thru-hikers and backpackers who need a reliable and comfortable sleeping solution
• Long-distance trekkers who require high-performance insulation in cold weather conditions
• Outdoor enthusiasts who value durability, water resistance, and weight savings in their gear

Warranty

The REI Co-op Flash Sleeping Bag comes with a 10-year warranty that covers defects in materials and workmanship.