Basically no benching shirt. The concept applies to the all three of the major compounds..
Raw Bench: No shirt
Raw Squat: No squatting shirt/briefs, no knee wraps (in some cases)
Raw Deadlift: No wrist straps, briefs
Basically any powerlifting gear that would allow you to lift MORE than you would without. In regards to benching, if you're a bodybuilder, it wouldn't make a lick of sense using a demin benching shirt for a max single.