Mesh Material & Double-Sided Wear The cool vest uses mesh material and can be worn on both sides. Cooling Duration & Convenient Durability Soak the cooling vest in cold ice water for 5 minutes, or put it in the refrigerator to fully saturate it with water. Simply wring it out lightly, and the cooling effect will last for a long time. Generally, it lasts for about 10 hours indoors and about 3-6 hours outdoors. It can provide a long-lasting cooling sensation. Increased Reflective Material on the Vest Reflective material can reflect light, making it safe for nighttime work. Reusable and Economical The cooling vest can be reused with water, so you can always stay cool and it's economical, with no worries about running out of batteries. Size: (approx.) 60cm x 40cm Weight: approx. 300g (slightly wet) Material: PVA #Makotoya's Summer Goods List is here ・Orders (paid) placed by 12:00 (excluding weekends and holidays) will be shipped the same day. Cooling Reflective Vest Double-sided Wear Cool Vest Water Cooling Clothing Mesh Summer Cooling Workwear PVA Heatstroke Prevention Cool Wear Outdoor Reversible Farming Sports Heatstroke Prevention Washable Lightweight RYOREI