Only for 2.5"-3.5" diameter of the beverage cup and 3.2" width 0.6" thickness phone.Upgrade 2 in 1 wheelchair drink holder with a phone bracket. The walker cup holder design with HOOk LOOP strap with an 8-sided angle, which stronger than the fragile Clip and easy to install. You deserve a durable cup holder.This rollator cup holder made of 3MM thick material and anti-slip strap, make it more sturdy and stable on the place. You don't need to worry about your coffee spill out yet.This water bottle holder is ideal to install on the upright bar and the inclined pole. We do not recommend to install on the crossbar. It will tilt due to gravity, unless there is a back on the back of the cup holder. The cup holder can hold 70 oz. Great cups and phone holder universal for wheelchair, walker, rollator, stroller. Love who you love and present this Christmas gift for your family and friends.