Castelli’s Thermoflex Arm Warmers have a fleecy interior to keep you cycling through the colder months. They feature an atomic cut for a close fit that does not constrict and silicone grippers to hold them in place.
fabric for full thermal protectionUse the table below to find the right fit. The measurements listed are for the unstretched GARMENT. Your upper arm will be 1-2 inches LARGER.
| Size | Length | Wrist | Upper Arm |
| S | 18" | 6" | 10.5" |
| M | 18.75" | 6.5" | 11" |
| L | 20" | 7" | 12" |
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