Protect your arms from cuts while working with sharp objects by wearing these 7941-PR Cut-Resistant Arm Sleeves. TenaLux yarn is ANSI A4-approved for cut protection to keep you safe on the job. They are also ANSI 105-2016 A1-certified for conductive heat-resistance. Moisture-wicking fibers absorb sweat to keep you dry, cool and comfortable. Easily tighten and customize fit on upper arm/bicep with the hook-and-loop strap. Thumb holes keep sleeves in place to prevent constant readjustment. Fluorescent color increases visibility and safety in low-light conditions. Machine-wash sleeves to wear the next day.