Stable-The large car cup holder can be placed on the both sides of the door side or seat armrests, when the car is in the driving process,heavy drinks will not be overflowed. Universality-The large cup holder holds up to 40 oz fits most sized cans,coffee cup,water bottle and juice boxes, accurate detailed measurements are listed in product pictures. Easy to Install-The bottle mount can be installed easily by sliding between your door panel and window that is easy to take and reach. Durable and sturdy-Manufactured from high quality ABS material, this window cup holder is durable, sturdy, felt strip on the back to cushion against glass. *************************************************************-We provide one-year *************************************************************, if you have any questions about our car cup holder, pls feel ************************************************************* to contact us, we will make you satisfied.