This multi-functional clip can keep your both hands free while you are riding a bike or going shopping with your baby on the stroller on sunny or rainy day. This is perfectly fit to any type of bicycle, wheelchair, baby stroller, walker, etc. It can be clipped to various shapes of the pole: round, square, triangular, etc. It also can fit any angles or any position and can support a wide range of thickness. Pipe series included: umbrella holder, cup holder, rear mirror, mobile holder and front light. Products are made of Nylon: a strong material that can prevent from tipping over in strong winds.