Performance Quarter Crew

🏃 Built for Action. Sized for Versatility.

The Performance Quarter Crew hits right at the ankle bone — a classic athletic height that works with everything from training shoes to duty boots. It's the workhorse of the FirstOn lineup: versatile, comfortable, and built to perform through whatever the day throws at you.

100% Made in the USA with 100% USA-made fibers.

🧪 Premium Materials

• Nylon for lasting durability and structure
• LYCRA® Spandex for a secure, contoured fit
• FYnesse® STA-COOL® Polyester to prevent blistering
• CuTECH® copper-infused fiber to enhance circulation and reduce bacteria
• Silver Tech Anti-Microbial to fight foot odor and infection all day long

💪 C4 Technology — Performance You Can Feel

• Comfort — Stay-put comfort band keeps the sock in place all day
• Contouring — Graduated compression contouring prevents swelling
• Compression — Targeted support for your ankles, legs, and arch
• Cushioning — Extra padding in the heel, ball of foot, and ankle reduces impact and friction

✅ Perfect For

• Running, training, and everyday athletic wear
• Mid-cut shoes, sneakers, and duty footwear
• First responders, athletes, and active professionals
• Anyone who wants a reliable, go-anywhere performance sock

Classic height. Premium performance. Made in the USA.