Cobalt Classics Blue-Rimmed Hand Blown Glass (Set of 6)Bordered in brilliant cobalt blue, these delightful tumblers bring a festive touch to any table setting. Classic and tasteful, the set of six comes from the NOVICA Handblown Collection. Because each piece is handmade, shape and size can vary slightly and tiny bubbles may appear within the glass. This exemplifies the hand blown technique, making every piece a unique example of blown glass craftsmanship. materials: Blown glass Dishwasher: use top rack