The Xevo B-2 model has been our most popular and best selling goggle. It has a medium sized frame that fits kids and adults and is also designed to fit over glasses ( OTG ) The B2 has a detachable strap and a great universal comfort-fit and looks awesome, too! The frame-less style with convenient interchangeable lens system is a goggle you can't go wrong with. We have a great selection of frame colors and lens options. Our recommendation is the B-2 Propack with our Xevo HD Photochromatic transitional lens that becomes completely clear for night and tinted in the sunlight. Compare the B2 to the competition for price, quality, and the Xevo best-in-the industry, lifetime no questions asked return policy and you will see we have no competition!