THE ORIGINAL Women’s Ninja Suit. This is the one-piece hooded base layer that started it all, developed to virtual perfection over the course of over 15 years of testing and abuse by our Ninja Ambassadors. If you need base layer, this is simply the best. Experience all of the fun and fringe benefits of being a Ninja, while enjoying the undeniable warmth and function of the original Ninja Suit. Circumferential waist zipper for easy pee-zy bathroom breaks.