NEMO Obi 3P Tent. The Obi™ tents are the black belt martial artists of our lineup. They are finely tuned instruments, with not one ounce of material wasted, every feature and detail driven by purpose and strategy. Subtly moving the front pole hub overhead gives the pole skeleton shoulders, creating more interior volume. A raised waterproof tub floor allows cutouts in the fly to save significant weight while improving ventilation.