Glasslock Handy Tempered Glass Round Mixing Bowl with Handle is made of tempered glass, which has a shock resistance 3 to 5 times higher than normal glass. Prepare, mix, serve, store and reheat your food all in the same stylish Mixing Bowl by Glasslock. These lids have four lateral clips that produce a smooth snap when locking them in place and the silicone gaskets ensure that the containers are 100 percent airtight. Mixing bowls great for salad and fruit.