Features HeatMaxx fabric that has a soft brushed inside to wick moisture while retaining heat.

• Materials: 86% nylon, 14% spandex
• Biceps silicone grippers hold warmers in place
• Flatlock seams to eliminate irritation and reduce chafing
• Fabric offers UPF/SPF 50 sun protection
• Opaque construction with brushed back to retain body heat
• Reflective accents for added visibility
• Size SM fits 11 - 12" Bicep