Phiten Compression Arm Sleeves are like none other. We're continuously improving upon our compression gear. Along with existing features such as quick-dry fabric, reinforced flat-seam lines along muscles and a snug fit for support, we've increased the length and improved upon the UV protection attribute. Combining function with smart design, our multi-sport Heather Sleeves, made out of a durable and soft yet weighted Nylon/Polyurethane fabric dyed with AQUA-TITANIUM, are ahead of its time.