Our 20oz TKWide insulated water bottle was designed to create the best water bottle, iced coffee mug, and insulated sports bottle, all in one package. TK Closure(TM) internal thread design with smooth, rounded lip for comfortable drinking and easy cleaning. Comes with the Insulated Wide Loop Cap which creates a full stainless steel interior, increases thermal performance, and has an easy-carry swivel loop. Easily transition between other interchangeable caps like our Chug Cap or Twist Cap for quick hydration.