Tupperware Crystalwave Plus Soup Mug microwavable 2 cup / 500ml Set Blue New New Tupperware Crystal wave 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. 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 and keeps them looking great for years.