It seems like many players around the league rely on Benik for their hand protection while running the bases, Jeremy Peña included. He wears the W-137B sliding mitt with his number “3” located on the wrist strap. The W-137B comes in two different versions; original and short. The original sliding mitt extends further up the wrist, where as the short mitt sits just below. Both versions offer great finger protection and will give you more confidence when sliding head first.
You won’t be able to order it directly from Benik’s website, but you can call 1-800-442-8910 to get your own. Take a look at this webpage for more information.