Baseball Umpire Pants Pleated Combo Base/Plate Wrinkle Resistant (Sizes 28-54", Used by Umpires from Little League to Professionals) Smitty's Pleated Umpire Combo Base/Plate Pants - Heather Grey. Sewn-in saddle-seat. 100% polyester, Wrinkle resistant and washable. Pleated front. Non-roll waistband. 2" x 3/4" belt loops. 24" knee, space for shin guards. Side slash pockets. Button loop on back pocket. Unhemmed. Used by Baseball & Softball Umpires from Little League to High School, College and the Pros