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. 2XL. Material: Activated polymer-embedded fabric interior, quilted nylon outer layer with water repellent liner and black cotton poly elastic trim. Applications: Construction, trades, maintenance, landscaping/grounds, assembly/fabrication, material handling, freight/baggage, warehousing/distribution, iron/steel fabrication. 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. Evaporative Cooling Vest. Certifications and Standards: ANSI/ISEA 107-2015 Class 2, Type R compliant. 1 each. Quilted nylon outer layer. Activated, polymer-embedded fabric inside. Soak in cold water, and enjoy cooling relief and comfort. Water-repellent liner and black cotton-poly elastic trim. 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.