We offer a full range of cup holder expanders to fit your specific bottle and/or mug needs.
Ultimate Expander: This version fits the largest amount of bottles and mugs. It's large enough to fit the YETI 46oz and 36oz Ramblers and still accepts smaller bottles such as 32oz Hydro Flasks and more. The coffee handle slot was redesigned to also accept the largest variety of coffee mugs. The YETI 14oz, 24oz, and 10oz Rambler coffee mugs will all work with this model. Most containers with a diameter of 3.4" - 4.0" will fit. Please see fitment photos above for visual reference. 
Hydro Expander: The Hydro Expander is best for most 32oz and 40oz water bottles. It's slightly smaller than the Ultimate Expander so containers over 3.8" in diameter will not fit (46oz and 14oz YETIs are NOT compatible with this model). This is the best version for 32oz and 40oz Hydro Flasks (still fits with silicon boot), 32oz Nalgene's, 36oz YETI Ramblers, 24oz YETI Rambler coffee mugs, and more. Most containers with a diameter of 3.4" - 3.8" will fit. Please see fitment photos above for visual reference. 
Mug Integrator: The Mug Integrator is specifically designed for those with a large coffee mug collection. The YETI 14oz Rambler fits in this design perfectly. As well as the 10oz Rambler, 10oz Lowball, and many other standard household coffee mugs. Please see fitment photos above for visual reference.