Stor-All's Non-Slip Mixing Bowl features a rubberized base at the bottom to make all of your home cooking projects worry-free. Besides the stable mixing platform provided by the bowl's rubberized base, it also reduces noise & avoids scratching/marking your sensitive countertop surfaces. All Stor-All food storage products are made from BPA-Free virgin plastic, are Microwave, Dishwasher & Freezer Safe and stack or nest conveniently on your counter or in your cupboard.