• The W4W Cup Holder is built with super durable Plastic, designed with a silicone insert that expands to fit any size Beverage or Bottle. • The heavy-duty clip expands to fit on most baby strollers, bicycles, wheelchairs, microphone stands, golf carts, boat handlebars, treadmills, beach chairs, walkers, kayaks, ATV's, scooters, and more. • The clamp is wrapped with a Non-Slip Silicone Grip to assure that the cupholder locks onto the device without movement. • Our 360° tech allows the clamp to swivel at any angle, which makes it easy to attach to even the most oddly shaped objects. Such as walking sticks, umbrellas, walkers, cribs, desks, car seats, handlebars, etc.