The vents company was only around for about 2 years before Scott bought them out.They have 2 different sets of lens depending on what year the goggle was made.If it has nothing but little black clips securing the lense,your screwed.\Thats the oldest lense and if you can find a lense get it.Howevere second year lense are scott compatible,they have little plastic projections that help to secure the lense.Hope this helps Jason
PS They are awsesome masks that get lots of comments unfortunately Scott didnt ike someone else having a good product out so they bought them out and shut them down.I've got 3 sets but need lenses also. All are first year lenses.