This review dives into the Klymit KSB 20° down sleeping bag, a one-size-fits-all model praised for its comfort, features, and overall value. We'll explore its performance in real-world conditions, examining its warmth, design, and practicality for backpacking adventures. From initial impressions of its high-quality construction and compact design to its performance in unexpectedly cold temperatures, this review provides a comprehensive look at this sleeping bag's capabilities.Key features such as the super-cushy hood, convenient internal stash pocket, and innovative stretch baffles will be highlighted. We'll assess whether the Klymit KSB 20° lives up to its price point and its accolades, such as the Outdoor Magazine Gear of the Year award, ultimately determining if this sleeping bag is a worthwhile investment for serious campers and backpackers seeking both comfort and performance.
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Overview and First Impressions
The Klymit KSB 20° down sleeping bag is a one-size-fits-all model available in red or black. Its right-hand side zipper is convenient, and the inclusion of a stuff sack stored in a handy internal pocket is a thoughtful detail. I added glow-in-the-dark paracord to the zipper pull for enhanced visibility in low light conditions.

Initial impressions were positive. The bag’s construction felt high-quality, and the compact design is perfect for backpacking. The overall aesthetic is sleek and modern. It also comes with convenient hanging loops for storage.

Field Test and Temperature Performance
I tested the Klymit KSB 20° bag during a camping trip on May 29th, 2016, in snowy mountain conditions. Temperatures dipped into the high 30s Fahrenheit (around 3-4° Celsius).

Despite the cold conditions, the bag performed admirably, keeping me warm and comfortable throughout the night. The drawstring hood cinched tightly, providing excellent protection from the elements. This demonstrates its effectiveness in unexpectedly cold weather.

Comfort and Design Features
The Klymit KSB 20° features a super-cushy hood, far superior to many other bags I've used, adding significantly to the overall comfort. The internal stash pocket, as previously mentioned, is excellent for keeping essentials organized.

Another standout feature is the “stretch baffles”. These eliminate dead air spaces, providing efficient warmth without feeling restrictive. The organic feel and comfortable fit make it a joy to use.

Final Verdict
The Klymit KSB 20° down sleeping bag exceeded my expectations. Its combination of superior comfort, effective warmth, and thoughtful design makes it a top contender in its class. It's lightweight, packs down small, and the premium materials and construction ensure durability.

While some might find the price slightly higher compared to other bags, the quality and the luxurious comfort justify the investment. Awards such as the Outdoor Magazine Gear of the Year award solidify its position as a premium product. I highly recommend this bag to anyone seeking a comfortable and high-performing sleeping bag.
