Key Selling Points: 1. High‑Intensity Support, Anti‑Slip & Stays in Place Made from a special high‑compression elastic fabric blended with 30% spandex, providing strong support while maintaining excellent stretch and comfort. The upper arm jacquard elastic structure effectively prevents sliding for enhanced stability. The cuff is specially designed with anti‑slip features to prevent upward or downward movement during arm swings, meeting the demands of high‑intensity running. 2. Light Compression Technology Incorporates light compression technology to effectively improve blood circulation in the extremities, reduce arm muscle fatigue, and enhance overall athletic performance. 3. Convenient Storage Pocket Features energy gel pockets on both arms, allowing easy access to fuel during races without interrupting your rhythm. 4. Ultra‑Compact & Easy to Carry When removed, the arm sleeve folds down to a compact size—as small as a cookie—and easily fits into a pocket, race belt, or other gear without taking up space. 5. Seam‑Free Construction Reduces Friction Uses a seamless bonding process to minimize friction during movement. Reinforced bar‑tack stitching further strengthens durability, ensuring a secure fit even during long‑duration exercise. 6. Reflective Logo for Enhanced Safety Equipped with a specially designed reflective logo that increases visibility to others during nighttime activity for added safety. 7. Optimized Wearing Experience The overall design prioritizes comfort—from fabric selection to structural detailing—all to reduce irritation and improve wearability. The high‑elastic fabric and ergonomic cut ensure support without adding extra burden on the arms. Key Detail Selling Points: Prominent Reflective Markings All-Terrain Ready 70% POLYESTER 30% SPANDEX