The same A4 cooling interlock as the tee, with sleeves for the miles that start before the sun does. Wicks hard when you warm up, so you are not soaked by the turnaround. • 4-ounce, 100% recycled poly interlock • Moisture-wicking, stain release, odor-resistant • UPF 44+ sun protection • Snag-resistant • Reinforced shoulder seams • Double-needle coverstitched hem • Tag-free label • Sizes XS-3XL