Climalite: Dry in every condition. Climalite sweeps sweat away from your skin so you stay dry every step of the way. Sweat but don't sweat it. Preshape in Elbow: The body that moves needs shaping that works. Preshape in the elbows allows for a natural, comfortable arm position for runners in motion. Reflective elements: Silver reflective, tonal reflective, and solar reflective all have one thing in common: be seen when it matters. Adidas running apparel has 360 degrees of reflectivity so the runner is always seen in low-light conditons. Regular fit: regular fit is the most common fit we use in running. Fits the contour of the body. Secure sweatproof pocket: These are the best way to carry valuables and keep them dry and safe. Sweat is an electronic's nightmare, and losing a key or money is a runner's nightmare. Avoid both with the secure sweatproof pockets. Thumb-holes: freedom of movement and the feeling of an effortless run is closer with the benefit of specifically designed thumbholes in your long sleeve garment. (COLOR-Bright Blue)