For your non-throwing hand. Quality stretch polyester yo-yo glove (the one without the string attached). Protects your fingers from string burn from the string that slides on your free hand when doing advanced string tricks. Plus they look really cool. These gloves fit either hand. This is for one glove.

To figure out your size, measure the length from the base of your palm to the tip of your middle finger.

If that length is less than 6.5" inches (16.5 cm), then get a Small (S) size.
If that length is in between 6.5" inches (16.5 cm) and 7.5" inches (19 cm), then get a Medium (M) size.
If that length is greater than 7.5" inches (19 cm), then get a Large (L) size.