The unique composition of Juliska glass allows it to be blown especially thin, making the glass an unexpected pleasure to drink from, and to handle. Being handmade, no two pieces of Juliska are identical. Each will have its own individual character small bubbles, slight color and size variations. Uniqueness is thus guaranteed. After successfully passing through a series of rigorous checks, each piece of Juliska is individually signed. Always demand this revered hallmark as your guarantee of its origin, authenticity and superior quality. Juliska glass is lead-free. Dishwasher-safe on a warm gentle cycle with mild detergent. Larger or highly decorated pieces wash by hand.