Yasaka Zap Biotech 40-42

Solid yet cheap training rubber.

I can pretty much copy the review I did on Zap Bio 36-38 to this one. Identical performance with a slightly harder feel to it. For something that is about 4 degrees harder, I expected to see more of a difference. You can hardly tell this rubber is harder than the 36-38 version.

Recommended for training, excellent price. It does not last too long and it does not have stand-out performance, but hey, for $10 it is okay… Much better choice for beginners than Sriver.

Have fun :).