Metal Cleats
When the field is firm and the game is fast, steel spikes give you the most bite out of the box and off the mound. Approved for most high school, college and adult leagues - though many youth leagues aren't, so if you're buying for a younger player, check molded cleats or youth cleats instead.
How to choose: metal is the top-traction pick for firm fields and older, competitive players; fit them snug, since uppers give a little over time.