1pc Cup Holder, 360 Degree Rotation Stroller Bike Water Bottle Holder Cup Holder, Universal for Walkers, Rollators, Wheelchairs Allows you to easily access to coffee, water bottles, sippy cups or other beverages when needed without the worry of spills; Note: This cup holder only serves the function of placing water cups; It is not for mountain bike use. Suitable for bottles within 5.5 cm-7 cm in diameter Made from durable plastic material, its smooth surface prevents against starches; With non-slip gasket, the cup holder can be clamped firmly on shelves; No worry about slipping off Features 360 degree rotation, this cup holder is easy to install and remove without any tools Universally compatible with standard walkers, rollators, wheelchairs, strollers, bikes, bed rails, transport chairs and so on size5.11*3.15 inch. weight135g*1. pack*1.