SANWEI T88-III
This is a budget pad for beginners and amateurs, with a great quality/price ratio. In the sense that it is very good for such a small amount of money.
It spins well and gives you all the possibilities for technique. It's not fast, so even beginners can easily handle it, as long as you don't put it on too fast bases. Rubber stiffness is slightly above average, and with a linear speed character, without catapulting - as you hit it, so it flies.
There is a little stickiness present, so it's not Velcro, but an overlay of an intermediate type between European and Chinese. Among the known similar overlays is Yinhe 9000E.
It is good for setting up the technique of all basic techniques. When used by more advanced players, it is suitable for defensive or universal style of play.
The black and red overlays have different colored sponges and have some differences in playing properties. The red ones are softer than the black ones. These differences are not critical for the purposes for which you should use this overlay. Also, when assembling a racket with a pair of these pads, it is worth trying each of them to play on the right and left sides. In order to choose which one is better suited for which side, as playing left and playing right often requires different rubber properties.