Performance Duffel Powerberry. Conquer Everything. An inspired workhorse that carries all of your gear. And then some. You won’t be leaving anything behind while conquering your next fitness adventure. Our best selling bag got even better. The Performance Duffel is designed to carry everything so you can conquer anything. Immense interior capacity, two exterior shoe pockets, laptop and tablet storage, and, of course, antimicrobial product protection to resist the formation of bacterial odor.