Maximum, professional heat stress relief

• Proven to reduce core body temperature
• Ideal for use under other protective equipment
• Effective even in high-humidity environments
• Provides up to four hours of cooling without restricting movement

Used by the U.S. Military for the last 15 years, this vest has proven its effectiveness in preventing heat stress. Simply freeze the reusable gel packs (Item G10120, sold separately) and insert into the vest for up to four hours of cool comfort while you work. Gel packs remain flexible when frozen, so you can move without restriction. Durable, flame-resistant, 100% cotton outer shell. Velcro® side closure. Zipper-front style holds four gel pack strips. Fits chest sizes 36"-54". USA made.