Hi there, Thank you for sharing your experience with us! We are glad that you enjoy our Eco Vanguard Short Sleeve! They are great for any outdoor activity, running, hiking, walking, climbing, or mountaineering. They also provide an easy air-flow function that dissipates heat away and prevents condensation, with excellent elasticity and enhanced range of motion. Regarding the washing of our Eco Vanguard Short Sleeve, here are the care instructions: machine wash at 30 degrees, do not tumble dry, dry clean, iron, or bleach. Avoid using warm water or a hot wash setting. With regular washing, your shirts will look great for a long period of time. Thank you for shopping with us! We hope to see you soon in our online store again. All the best, Stephanie