The SixSixOne EVO Elbow guard is magic. Maybe it isn't actual magic, but it sure seems like it is. The EVO is a thin, low profile, flexible elbow guard that's comfortable to wear and won't limit your range of motion. Upon impact, however, the EVO's D30 pad instantly hardens to form a tough shell of form fit protection. That's as close to magic as you'll find outside of a late night infomercial. The guard's covering is made of Cordura. It's breathable and flexible, but its stands up to abrasion. Kevlar panels increase durability. The EVO elbow guard uses hook and loop fasteners for a snug, custom fit and ease of use.