Turbolence Foam Interface

The foam interface only comes in one size. So does the glasses frame. Yet, the interface that shipped with the glasses did not fit the frame. The interface was noticeably smaller than the frame, which means it did not snap securely into the frame, and would not stay in place. It (and the glasses) went back. Good idea, but poor execution.

It does what it supposed to do but the sponge feels a bit on the cheap size…