ORIGINAL AND THE BEST -|Each jar is made from high quality sodalime glass material with pristine clarity and consistent wall thickness ensuring no weak points. The glass jar is dishwasher safe. The disc and screw band should be hand washed only and dried immediately.|GLASS IS BEST AND SUSTAINABLE -|Glass is best for storing / preserving and transporting food and drink. It is 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. Kilner continues to tackle plastic waste with our ethos of REUSE, REFILL, RECYCLE.