Our engraved cobalt blue drinking glasses are recycled from Riesling wine bottles and meticulously sand-carved by hand with your monogram, personalization or your company logo. Create a beautiful table with our colored glassware or give a unique gift to that person who has everything. Our cobalt blue tumbler glasses hold approximately 12 oz and measure 4.5" high by 3" wide. The lip of the repurposed wine bottle has been beautifully and carefully polished to a smooth edge for drinking. Dishwasher safe.