The t-shirt for men, Zero Rules Short Sleeve from the brand Columbia, is a t-shirt with a minimalist design designed for your most intense endurance activities such as long hikes. Indeed, this t-shirt developed by the brand Columbia combats heat thanks to its Omni-Wick technology, allowing your body to thermoregulate during your efforts. Made with a cooling and breathable fabric, the Zero Rules Short Sleeve t-shirt manages heat by reacting to your sweat to lower the temperature of the material. What more could you ask for? Materials: 100% polyester Omni-Freeze Zero™ cooling technology activated by sweat Omni-Wick™ Omni-Shade™ UPF 30 sun protection Antimicrobial treatment: prevents bacterial growth Comfortable stretch fabric Omni-Wick: Wicks moisture away from the body so sweat can evaporate quickly Columbia Zero Rules Long Sleeve Shirt - T-Shirt - Men's