Oakley l frame goggleswhen youre pounding through the rhythm section and the track turns to fuzz its because your contact lens has bailed we designed the mx l frame to fit over your prescription glasses so you can leave the contacts in their case this goggle includes proven design features like flexible urethane construction a non slip silicone treated strap triple layer face foam with moisture wicking and the clarity of an optically pure lexan lens its fully compatible with an atfm h