Klymit · Sleeping Gear

KSB 0F/-18C Sleeping Bag

Name: KSB 0F/-18C Sleeping Bag
Brand: Klymit
Price: 324.99 CAD
Availability: InStock

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About this product

The Klymit KSB 0F (-18C) is a mummy-style sleeping bag built for cold-weather camping, rated to 0 degrees Fahrenheit (-18C) and weighing 1.8 kg (3.9 lb) in the standard large size. Its hybrid insulation system pairs 80/20 grey duck down on top, rated at 650 fill power, with synthetic fill on the bottom, striking a practical balance between warmth, weight, and moisture resistance. The 20D Nylon 400T shell with WRC6 water-resistant coating measures 82 by 30 inches (208 by 76 cm), with a 58-inch shoulder girth. Flexible Stretch Baffles keep insulation close to the body during movement, while Length Locks allow height adjustment for a snug foot-box fit. A mummy hood with draft collar and drawcord seals in warmth, and an anti-snag two-way YKK zipper offers ventilation control from either end. The bag compresses into an included stuff sack measuring 16 by 9.5 by 9.5 inches (41 by 24 by 24 cm), and an interior stash pocket adds convenience. A two-year warranty is included.

Category: Sleeping Gear
Brand: Klymit
Material: Shell20D Nylon 400T (WRC6)
Color: Colour: Orange - Grey
Size: • Dimensions: 82 × 30 in / 208 × 76 cm
Weight: 3.9 lb / 1.8 kg
Warranty: 2 Years
Dimensions: 82 × 30 in / 208 × 76 cm
Fill Power: 650 FP
Shell Material: 20D Nylon 400T (WRC6)
Shoulder Girth: 58 in

What people are saying

Reviewers consistently praise the Klymit KSB 0F for its exceptional warmth, frequently noting it performs reliably in temperatures well below freezing, including single-digit conditions. The stretch baffles and roomy interior are standout features, especially appreciated by restless sleepers and larger individuals, with many recommending the oversized version for a better fit. The adjustable length locks and built-out foot box also earn positive mentions. The most common criticism is the bag's bulk and weight when packed, making it a poor fit for ultralight backpacking and better suited to car camping or base camp use. Some users also report zipper issues and durability concerns with the shell fabric after limited use.