The Complete Comfort II mat is constructed with durable nitrile foam. At 1/2" thick, it provides excellent anti-fatigue qualities. It is anti-microbially treated to protect against odors and degredation, and designed to perform in virtually any environent. It is grease and oil proof as well as chemical resistant and welding safe. The beveled edges provide a safe transition from the floor to the mat. Its lightweight, flexible design make it easy to handle and clean, and it can also withstand autoclave sterilization and commercial laundering. Complete Comfort II mats are proudly made in the USA by M+A Matting.