Pearl Izumi's thermal arm warmer provides great coverage with an innovative upper arm and wrist scallop. The P.R.O. Thermal Fleece panels provide optimal warmth, while the nylon face sheds the weather and a polyester back holds warmth and is soft next to skin. The upper arm scallop interfaces perfectly with jerseys for full coverage. Other features include a plush elasticized gripper for a soft, smooth grip and reflective logos for low-light visibility. Machine washable (no fabric softeners).