Better-Bottle carboys are unbreakable, extremely lightweight, and designed with textured grip ribs, so they are safe to use, and easy to handle. They are also easy to store away when they are not in use. Their injection molded necks are wide, so filling is convenient; uniform, so a variety of closures fit consistently; and extra strong, so handles can be attached. Special PET plastic means: Negligible oxygen permeability . No taste or odor . Meets FDA requirements with Kosher statement . Clear and colorless . Exceptionally stain resistant . Smooth, non-porous, non-absorbing, hydrophobic surface does not carry over flavors and soaks clean without brushing . Superior resistance to cleaning and sanitizing agents. The 6 gallon size is the perfect size for full-size wine kits and is widely favored for brewing beer.