Tupperware Crystalwave Plus Soup Mug microwavable 2 cup / 500ml Set Blue New Tupperware Crystalwave Plus soup mug. 2 cup / 500 ml Food can be reheated in the microwave, thanks to the heat-resistant material and valve on the lid to prevent pressure build-up by letting steam escape. Splatter-free Microwave, CrystalWave's seal prevents splatters during microwave heating. Safe on-the-go thanks to the leakproof lid. Ergonomic handle to grab safely from the microwave and perfect for enjoying your soup or warm snack on the couch. 2 cup/500 mL. This durable and delightful microwavable soup mug is an ideal, on-the-go meal storage solution. It is also perfect for a healthy and warming soup at home, reheated mess-free and in no time. Mug features easy-carry handle, larger seal tab and push-open vent cap. Just pop the steam vent and leave the seal in place to prevent spills when reheating. The stain guard protects the container from stain-prone sauces