NEW IN BOX! was a gift but I don’t mountain bike About this item The Hack goggle ensures your field of view is protected and clear at an exceptional value. Offering outstanding peripheral vision and easy lens removal, exchange, and replacement, the Hack g 3-ply foam for increased comfort 45mm elastic strap Outriggers with universal helmet compatibility Description IXS Hack Goggle Trigger Black/Mirror Gold One Size, 45mm Elastic Strap, Unobstructed Pereferal Vision (178°x78°), 3ply Foam for Increased Comfort, iXS Roll-Off/Tear-Off Compatibility