STRONG AND EASY TO USE -- Made of very strong and flexible PP plastic meterial, once mount to the boat rail, the adjustable knob willl make the cup holder rock solid on the rail, secure the cup or bottle in place safely and prevent the beverage from spilling or falling. 
 360-DEGREE ROTATION -- This drink holder can be rotated on a full 360 degrees so it can adjust on any angle. It's compatible with most strollers and can be also be used on wheelchairs, trolleys, bikes or walkers. 
 EASY TO MOUNT -- You can install it without need for tools or equipment and can be mount on the front or side bars of a stroller or under the seat. Clamp can be adjusted so it can easily lock on rods, pipes or tubes. 
 FIT MOST OF CONTAINER -- The part that holds the drink is flexible enough to expand to fit any size of container like cups, water bottles, coffee cups, beer, cans, glas and so on. 

 
 
 
Stroller Cup Holder
 
 
 
 
Cup Holder
 
 
 
 
Cup Holder for Bikes Trolleys