Review on Astiboutique Eco-Friendly Silicone Foam MTB Grips with Memory Foam Technology and Ergonomic Design, Anti-Slip, Shockproof, and Weather Resistant Bicycle Handles for Comfortable Cycling in 9 Vibrant Colors by Ralph Banks

I bought these knobs for $6 (black). Well, they're not even worth it. Their diameter was 28 mm, not 32, and the foam rubber is not dense at all. You feel the bar right through you. I had a very long pair of ESI grips but didn't want to sacrifice them for what I was going to do with them. They should be used to fill the gap between my ergonomic grips and the brake levers on the Jones Loop handlebar. They may do the trick but I have a feeling they won't last long as the material felt very cheap. I thought I'd make a deal, but I have to do the remix myself. You get what you pay for. Spend $20 and buy American made ESI pens.