The Womens Super Tech Tee Zip Short Sleeve T-Shirt from Berghaus work in harmony with your body to help keep your climate under control, as argentium protechnology reacts to the physiology of your body. It becomes extra cooling and breathable when you heat up, and works to be more protective when you start to cool down. For when you’re pushed to your limits, you can stay cool and fresh, as it’s got fantastic wicking properties combined with lasting odour resistance. If you’re working extra hard, you can undo the front zip to just above the chest and let the air flow. And staying safe in the sun is made easier with UPF protection of 30+ that’s built into the main fabric . With technical detail and our Lifetime Guarantee, you can be sure this tee is in it for the long haul.