Carhartt Force All-season Protective Sleeves protect arms from the sun and debris while working or recreating outside in a t-shirt. These versatile sleeves easily slip on and off to adapt to changing weather or work conditions and are a convenient choice for those wanting UPF 50+ protection or a physical barrier but not wanting to apply sunscreen lotion or wear long-sleeves. The lightweight, breathable sleeve fabric blocks 98% of harmful UV rays protecting arms against sun, dust, dirt, and hay while farming, gardening, or cycling. Sweat-wicking, odor-fighting fabric stretches to move with you and thumbholes allow you to wear the sleeves over the tops of hands. Cooling bands on the upper arms help you maintain a comfortable temperature in hot weather. Sold as a pair, these durable protective sleeves are neither right nor left, have a Carhartt logo on one of the sleeves, and come in four unisex sizes. Determine size by measuring the bicep in its natural state (not flexed).