The Fizik bar gel gives my round road bars a nice cushioned feel that helps reduce the numbness. I've tried two layers of tape and flat-top road bars, but this gel has proven to be the best solution for me.
This is a great product. I have it on all my bikes (way too many). Really helps with dealing with vibrations, etc. and seems to last and last. The only downside is it does make your bars a little larger, but I think it is a little better than doing a double wrap. I have sort of large hands and I like the bars a little bigger.
I use this with two wraps of cork tape. Nice and thick with plenty of comfort for those long century rides. If you're encountering numbness in your hands and shoulders I recommend this solution. My only criticism is that it would be nice if this product were less expensive.
I run this on all my bikes. The cushioning helps a lot to prevent numb hands. Some double tape but I prefer the comfort in a smaller profile. It takes minimal attention to install and can be reused when you retape your bars
If you suffer from pain and numbness then buy this product. Combine this with a quality bar tape and you will notice the difference right away. Just make sure you have enough bar tape to cover the extra area needed.
I was having trouble with numb hands. This helped. Unlike gel tapes I used it still gives a firm positive grip when sprinting or climbing. It adds very slightly to the bar diameter which I prefer as it helps distribute pressure on the hands.
I suffer intermittent wrist pain when riding 5 hours, bar gel has helped reduce the pain. I like the larger diameter it creates on the drops, and the padding allows me to rest my forearms on the top bar for long flat rides to take stress of my wristshands. Legs are supposed to suffer on a long ride, hands are not.
Been using this gel under Fizik and Bontrager tapes, and it works wonderfully well. I find the combination vastly superior to the padded tapes or cork tapes I tried in the past. Great shock absorption on tops and drops, but no more than you actually need. Not planning on changing anytime soon.