POC's Thermal Sleeves work as part of your overall clothing selection to keep you warmer on colder rides. Constructed from a four-way stretch fabric, the sleeves feature a fully brushed inside to enhance warmth, and fully flatlock seams to increase comfort. That sounds a bit basic, though straight to the point, however there are some other aspects worth knowing. The sleeve outers have been treated with a fluorocarbon-free DWR treatment to provide protection from light rain showers, so they are a protection-grade options. Silicone grippers featuring the POC logo are included at the upper opening to ensure the sleeves stay securely in place. A reflective POC logo is included on the left arm to improve visibility in low light. Standard, but perfect details.