Magnum Steel - Handle for 30 oz Tumblers - Universally Fits All Brands (Yellow) Ergonomic Handle for 30 oz Tumblers Universally Fits Stainless Steel 30 oz Tumblers - RTIC, Magnum Steel, the rest Pressed & Polished Nylon - finger and thumb impressions provide a breathable, non-sweaty design Lightweight, Simple to Use, Dishwasher Friendly Listing is for the Handle only, not the cup