And since it's open-frame you can easily clean it with a sponge or bottle brush! The deluxe model (not sold here) includes a friction-fit umbrella holder, alleviating any worry about chunks of fruit knocking it around. The aesthetically pleasing rippled contour reduces slippage due to condensation from cold drinks, or when it isn't your first (or second) mai-tai. Image is from the prototype, which lacked the open frame architecture.