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 20+ 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 hip zip for easy pee-zy bathroom breaks.