This item is the cup portion of the OpenSourceEV NextGen Aux Cupholder. These slot into the OpenSourceEV NextGen Aux Cupholder brackets without any tools. Please note that this does not include the bracket portion - those are available separately or in the combo part available here: https://opensourceev.com/products/nextgen-aux-cupholder. 

There are two sizes of the cup available:

Standard
79MM wide at the top, 71MM wide at the bottom, and 89MM tall. This size is designed to hold most common drink sizes such as cans, 20oz plastic bottles, most fast-food drinks, and 20ish oz vacuum insulated cups.

Large
92MM wide all the way through, and 102MM tall. This size is designed for common 40z water bottles and mugs.

Each version flexes slightly and has a cutout down the side so you can insert cups that have a handle on them. Neither size is stowable in the door side pocket as they are too wide, but they can ride in the area above the pocket and will largely stay in place there, even when slamming the door in most cases.  

Before purchasing, we strongly recommend measuring the cups you're looking to install.

This product is a very slightly updated version of the Rivian Cup Holder Clips, made by Todd Stansell. Sold by permission of the author. You can download the design here.