Nike Sunglasses style Impel Swift is designed for the runner who demands high performance lenses and comfort!. The Impel Swift is a lightweight semi-rimless wrap designed with a ventilated nose bridge, locking spring hinges and non-slip temples for maximum comfort. The signature Nike logo is featured on the temples. The lightweight, scratch/impact resistant polycarbonate lenses ensure superb optical clarity & reduced fogging. Nike sunglasses lenses always provide 100% UVA/UVB protection.