High quality sodalime glass material with pristine clarity and consistent wall thickness ensures no weak points Glass is great for storing / preserving and transporting food and drink; made from natural ingredients so no harmful chemicals or toxins can leak into the food Glass is BPA free and does not absorb odours, flavours or stains; not only is glass a healthier option, it is made to last and never for single use Glass jar is dishwasher safe; the disc and screw band should be hand washed only and dried immediately