710 710 Foam Lined Safety Eyewear Size:R May be used over and Best Seller May be used over and over again Very durable and will last multiple seasons with proper care and normal use Perfect for use in high heat humid areas and under protective equipment Provides comfortable cooling up to 3 hours Temperature set to 65° Adjustable at shoulders and torso for snug high fit to deliver cooling to the core Activate by placing the packs in a refrigerator or freezer for 1 hour or in a cooler with ice water for approximately 20 minutes One size fits most: up to size 58" chest Can be wall mounted or use a freestanding display non slip fit The dual mold rubber temples and soft