Ask ESEE owners which single knife to buy and most will say the ESEE 4. ESEE Knives calls it the do-all workhorse of the line, and it has held that job since it was the RAT 4. The spec explains why. A 4.5 inch drop point on 3/16 inch 1095, 9 inches overall at about 8 ounces, with a 4.1 inch cutting edge that has enough belly for skinning and enough length to split kindling. It is big enough to be your only blade on a trip and small enough to wear every day.
The 3/16 inch spine is the compromise everything else in the lineup gets measured against. It is stiff enough to baton through wrist thick rounds and pry without flexing, yet still thin enough behind the edge to slice food and process game without wedging. The plain edge 4P and partially serrated 4S come in black, desert tan, and olive drab, including an orange handled olive drab build that is easy to find when you set it down in leaves. If the work is mostly chopping and splitting, the ESEE 5 goes up to quarter inch stock, but for a single blade among your survival knives, the 4 covers more ground.
The ESEE 4 S35VN comes in three handle builds. Each one is the standard 4 profile in stonewashed stainless, matched to a different grip. The 3D gray and black G-10 is machined for hand fill, the orange G-10 is the high visibility pick, and the canvas Micarta gives the warmest grip in cold, wet hands. The 1095 side of the grid has its own 3D handles in G-10 and canvas Micarta, so whichever steel you choose, the flat factory slabs aren't your only option.
The ESEE 4HM is the hunter's version, with a much fuller Micarta handle at 0.85 inch thick, a 4.375 inch blade, and a leather belt sheath that sits quietly in a treestand. The standard 4 has the widest sheath support in the ESEE line. You can choose the factory molded sheath in black or coyote brown, a dedicated ESEE 4 Kydex sheath, a clip plate for belt carry, or a MOLLE back for a pack or chest rig. Spares for every setup are stocked in ESEE accessories.