Ergodyne Chill-Its 6665evaporative cooling vest features a V-neck with zipper closure and has polymer-embedded fabric inside for more comfort. Lightweight, durable vest includes water-repellent liner and black cotton-poly elastic trim. Size Medium. Evaporative cooling safety vest. Zipper front. Gray. 1 Each. Dimensions: 15"(H) x 1 - 1 1/2"(W) x 12"(D). Material: Polymer inside/nylon outer layer. Applications: Construction, trades, maintenance, landscaping/grounds, assembly/fabrication, material handling, freight/baggage, warehousing/distribution, iron/steel fabrication. Features V-neck, acrylic polymer, lightweight, durable, and washable. Water-repellent liner and black cotton-poly elastic trim. Soak in cold water, and enjoy cooling relief and comfort. Medium. Material: Activated polymer-embedded fabric interior, quilted nylon outer layer with water repellent liner and black cotton poly elastic trim. Closure type: V-neck with zipper. Cooling type: Evaporative. Soak in water for 2 - 5 minutes to activate. Remains hydrated for up to 4 hrs. Lightweight, durable, and washable. Ergodyne Chill-Its 6665evaporative cooling vest has an outer layer made of quilted nylon and is perfect for use in construction, landscaping, warehousing, maintenance and steel fabrication applications.