Per STT's website: - One or two piece leathers. Two piece leather suits must zip together for Novice, Intermediate or Advanced groups. Ballistic nylon suits such as Joe Rocket, AeroStitch etc. are acceptable in the Novice and Intermediate Group only provided they are either one piece or two piece that zip together with 50% zipper contact, reinforced and padded shoulders, elbows, hips, and knee areas. No chaps. Now I don't know what mid-ohio will require under their new staff. Either way be smart and get the correct gear. You don't want to have you skin being chewed up.