Standard Large Slim format 19mm pads by YoYoFactory fit most of brand's yo-yos and many more. Set of two.
The official color/type breakdown is quoted below:
White: the standard YoYoFactory response pad. White pads come in almost all of our yo-yos when they are brand new because these are the best all-around pads. Whether you use them in preparation for a contest, for a high intensity freestyle, or for just hanging out and throwing, the white pad will play to your standard. Good for all styles of play.
Red: the Competition Pad. Red response pads break in very quickly, reach an ideal sweet spot, and then wear out quicker than any other pad. This combination makes them perfect for freestyle competition play, in which you can break them in within minutes and walk on stage ready to go!
Pink and Yellow: the Consistent Pad. These pads are reliable in how consistent it plays as it wears down. Unlike many of the other pads that have a sweet spot once they are broken in, the pink and yellow pads are as good when you first swap them into the yo-yo as they are just before they're worn down to the core.
Teal and Blue: the Grippy Pads. These pads have a little longer break in period, meaning that they retain that new pad feel for much longer than most other pads. Once broken in, blue and teal pads hold a Medium Response while still holding an overall grippy feel.
Natural: the Marathon Pad. The Natural color pads are intended to be the longest lasting pad that we make. Surprisingly they also require very little break in time, no maintenance. Best used in the yo-yo that you take with you wherever you go.
Green: the Green pads are the extra-thick responsive pads, replacement for the responsive versions of the ONE/Dv888/Hubstack/Replay. These sit above the normal pad area in any large/slim padded Yo-Yo to make the string grab much easier.