I bought a few test items through a local well-known US provider for a LOT more money, and the sublimation cups I got from Hangzhou Yipai Import And Export Trade Co., Ltd. are WAY better. More waterproof, they include 2 straws in case someone prefers plastic or metal, has a rubber bottom. I will be purchasing more of these as I need more. They arrived quickly as promised, and the team was amazing to work with.