chad nyewrote a review of iSSi Flip III Pedals on May 21, 2018
You couldn't clip into these with a barrel full of grease and a sledge hammer. Flat side is fine. Good texture. Clipless side ... good luck. The cleats they sent with pedals had one washer that had to be forced into channel. That should have been the first clue. Then it was IMPOSSIBLE to get these clipped in. Tension up and down made no difference. You could lay your cleat perfectly in the channel and pound it with a sledge hammer and STILL not get clipped into these things. Don't waste your money on this junk.
I didn't list anything under "Familiarity" because there is no category for, "I tried to use it as advertised, but it was so CRAPPY that was not possible."