Nike Skylon Ace E sunglasses are great for any type of athletic training. With an eight-base sport wrap frame design for maximum coverage, the durable, lightweight nylon frame has cam-action spring hinges that snap firmly into place for a comfortable fit. The secure-wrap temple arms have rubber tips and a custom heritage tread pattern for a secure grip and maximum stability. The nose bridge is ventilated to improve comfort and airflow, and reduce slippage and fogging. The lenses are interchangeable to match any light condition, and are partially entrapped to minimize visual interference. The deep red sunglasses have Max Speed Tint lens technology to relax the eyes and enhance visual clarity. These sunglasses also have the option for prescription lens.