• Birdz Thrasher Motorcycle Glasses Thrasher Riding Glasses by Birdz Eyewear Featuring Our Flex-Temple System Convert to Goggles and fit Nearly any head Size. Thrashers Include a Strap to Replace the Tamples. Big Padded Foam Means These Can Endure Whatever Kind of Wind You Can Throw Their Way. • Yellow Lenses are Perfect for Low Light Conditions, Especially Morning Or Evening Riding with Long Shadows • Gloss Black Frame • 100% UVA/UVB Protection