Alba introduces its pro-grade Mantra frame

Designed for pro cycling and running, the Mantra is a high performance shield frame that combines lightweight materials and high definition lenses for extensive coverage and sun protection. Handmade in Italy, the Mantra features a single piece, hinge-less TR90 frame with interchangeable VZUM lenses with strategic venting to reduce fogging. The frame also includes different nosepad sizes, a reflective leash, and it's compatible with their optical clip so you can add your own prescription. 

$183, albaoptics.cc