Material Outer:Polyester(6000mm/H2O Waterproof Index) Inner:velvet: warm & comfortable; wind-proof and water-repellent Zipper type:Zip-closed hand pockets,SBS Waterproof: Yes Windproof: Yes Machine washing: Accepted About heated fleece vest Thick heated Fleece vest keeps you comfortable during the cold winter. Windproof heated vest prevent cold wind from penetrating your body, keeps you warm during the cold scenes. Men heated fleece vest adds collar heating positions to keep your neck more warmth,to make your body more flexible as usual. Carbon fiber heating technology 4 heating zones: left/right chest and collar,back. 4 Heat Stages: Preheat, Low, Medium, High. LED illuminated button for on/off and temperature setting. High Temp LED indicator red, Medium temp LED indicator white, Low Temp LED indicator blue. Press and hold the logo 2-3 seconds to close. Read more Read more Questions and answers --1.What is the best way to clean my heated clothes? Hand wash or machine wash (in the laundry bag) in cold water. Do not twist or wring. Just hang dry. --2.How long does the heat last? Temperature can be individually adjusted to the respective needs via three heat settings. High-temperature: 45 ℃ - 55 ℃ / 3.5-5 hours. Medium temperature: 35 ℃ - 45 ℃ / 5-6.5 hours. Low-temperature: 30 ℃ - 40 ℃ / 10-12 hours. Men Heated Vest Men Heated Jacket Men Heated Lightweight Jacket Camo Hunting Heated Jacket Men Heated Jacket Heat Zones 4 3 3 3 3 Wind Resistant ✓ ✓ ✓ ✓ ✓ Water Resistant ✓ ✓ ✓ ✓ ✓