The Iris Cage features a timeless, elegant design, precision-machined in our Durango, CO shop. Crafted from durable stainless steel, it won't leave black marks on your bottle. It's the perfect fit for standard cycling bottles and also accommodates metal bottles like the Mover 18oz Purist, Kleen Kanteen, and Hydro Flask (with a bottom width of 2.9 inches). Designed with a slightly tighter fit than a standard cage, it offers extra security for your bottle, especially when mounted on the down tube. Like all of our cages, it's proudly made in the USA, combining superior craftsmanship with lasting functionality.