The 5.11 Burner Half Frame Sunglasses features a TPR (thermoplastic rubber) nose bridge insert to ensure that your sunglasses won't slip out of place. Of course these sunglasses come with 100% UVA and UVB protections. The T-Shell coating on the 5.11 Tactical Multi-Lenses Burner Eye Wear make the lenses resistant to scratching, cracking and crazing. The lenses are distortion free and are GSA-compliant; you have the ability to change from smoke, clear and ballistic orange lenses, depending on your mood. The 5.11 Half Frame Sun Glasses are the only sunglasses you'll need for work and for your outdoor hobbies and still look fashionable.