This is a set of 10 response pads (5 pair) made by Sochi Company.
It is a slim size (yoyofactory C size compatible) so it can be used with many yo-yos.
There are three types of hardness (good or bad return), so you can choose according to your preference.
Normal : general return
Extra : The return is slightly stronger.
Extra-plus : return is strong
The Sochi Company is a brand of strings, pads, bearings and other supplies owned by Lucky Lee, a yo-yo player who lives in Canada.
This is a brand that has gained a lot of support by developing products from the player's perspective.