Believe me, I have tried SO many cups, thermos, tumblers, bottles etc..... And I always have to have one with me. Some many issues with other cups- straws fall off, no lock, sweats all over, does NOT keep your drink cold, way too expensive, won't fit in cup holder, the list goes on and one. But!!! This Artic Contigo really is the best!!! All around, no doubt, hands down, totally and completely the BEST cup ever. The ice stays ice for hours and hours. The straw screws on so it doesn't pop off while u are drinking. It's great for travel or everyday. Our whole family of 5 loves them! Thank u for an awesome cup!