Built for brutal cold. The Sitka Heavyweight Over-the-Calf (OTC) Sock is your first line of defense against late-season chill. Designed for long sits, long hikes, and unforgiving weather, this sock blends the warmth of Merino wool, the performance of PrimaLoft® yarns, and the durability of Cordura® reinforcements for unmatched comfort and endurance in the field.

Why It Stays in Your System

• Merino Wool Blend: Regulates temperature and insulates even when wet—perfect for freezing sits or variable conditions.

• PrimaLoft® Warmth, Less Bulk: More insulation, less volume inside your boot.

• Cordura® Reinforcements: Strengthens the heel and toe box to withstand heavy wear over time.

• Targeted Cushioning: Built-in zones support comfort over rugged terrain without adding unnecessary thickness.

• Anti-Twist Midfoot Band: Keeps the sock locked in place, preventing bunching and slippage in your boot.

• Performance Fit: Streamlined design keeps you warm without compromising mobility or breathability.

Cold feet shouldn’t end a hunt—stay locked in through the harshest weather with Sitka’s go-to late-season sock.

Specifications