If this kitchen measure set is about to go through the dishwasher, which means it should be able to withstand warm or even hot water and come out without a sign of melting, tritan which stands temperature from -4℉ to 228.2℉ beats others in no doubt. Compared with the PP plastic, U-Taste bakery measuring cup set has a crystal-like look, and releases no BPA unlike some PC plastic may have. Another feature of this sturdy diet measuring cup set is that it visualizes the measuring process. You can see the ingredient goes and check when it reaches the measuring line with it. They can fit inside one another, and holds tightly into a completely compact set. Take up small space in your cabinet. The buttons that snap them together are rather simple by look, but in fact we have tried two versions and picked the winner from a limits test. What we have now is the one that lasts longer, snaps easier, stacks snugly, but still is easy to release to get the cup you need.