It's hard to beat THE ORIGINAL. Developed to virtual perfection over the course of nearly 15 years of testing and abuse by our Ninja Ambassadors. Experience all of the action and fringe benefits of being a Ninja, while enjoying the undeniable function of the original Ninja Suit. The Ninja Suit is a one-piece base layer made of 4-way stretch wicking AIR TECH fabric. With a 350 degree waist zip for easy number two bathroom access, a 7-panel form-fitting hood, and a full-length front chest zip. The best long underwear on the planet! Airblaster offers our Ninja Suits in multiple colors and sizes. To ensure the size you choose is just right, please refer to our sizing chart. To find your waist measurement, measure around your natural waistline. And for your inseam measurement, measure from the top of the interior leg to the bottom of the ankle.