Hardwood, fire, camp, repetition. Cutting, carving, preparing, adapting. When the environment sets the rules, the Extrema Ratio OUTDOOR series knives are designed to stay operational as long as you are. The Extrema Ratio Outdoor series is built around a simple principle: when you’re out in the field, excess weight is a liability.
Hardwood, fire, camp, repetition. Cutting, carving, preparing, adapting. When the environment sets the rules, the Extrema Ratio OUTDOOR series knives are designed to stay operational as long as you are. The Extrema Ratio Outdoor series is built around a simple principle: when you’re out in the field, excess weight is a liability.
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Sethlans S600 Outdoor
Sethlans S600 Outdoor is a fixed blade knife designed for bushcraft, survival, prepping, and prolonged outdoor use.
Based on the original Sethlans – already well regarded as a bushcraft and survival knife – it is reinterpreted in the Outdoor configuration with functional solutions specifically developed for field operations.
It is a tool conceived for repetitive work on wood, rope, and natural materials, for camp management, and for all activities where control and durability matter more than aesthetics.
Compact in thickness yet structurally robust, this is an outdoor fixed blade engineered to perform for extended periods without requiring complex maintenance.
Blade & Performance
The full tang construction ensures maximum rigidity and mechanical continuity: no interruptions, no hidden weak points.
The blade retains the proven Sethlans geometry, optimized to deliver control, cutting efficiency, and structural strength in bushcraft and survival tasks.
The Outdoor Stone Washed finish is selected for demanding use: less sensitive to wear marks, easier to maintain, and more tolerant of dirt and moisture – fully consistent with a professional‑grade outdoor knife.
Handle & Configuration
The handle features green G10 scales with the Extrema
