Oglesby & Butler makes the Iolite 2.0 and WISPR, two handheld loose leaf vaporizers that run off butane as opposed to cords or batteries. Iolite Vaporizers are easily portable and will never burn your blends. Each Iolite features a plastic mouthpiece; the difference is that the WISPR uses a foldable flex-straw. Both are backed by a 2 Year Manufacturer's Warranty.