Review on 🚵 Mountain Bike Seatpost Dropper Remote Lever: Universal Adjustable Shifter for 22.2mm/24mm Mountain Handlebars – Includes 2 Wrenches by Chris Maurer

Works great but needs a rubber or plastic thumb pad for two reasons I think. #1 The back of the thumb area is a bit sharp along the finished edge where your thumb may hit it from time to time so I just smoothed it out quickly. #2: Since the trigger is actuated by depressing the pad of the thumb, its range of motion takes it away from the normal motion of the thumbs, and if there were a guard with a slightly tapered edge for gripping the thumb, it would be ideal to activate on hard, fast, bumpy rides. It's easy to install.