Handmade tumblers and bottles in colored borosilicate glass that is thermal shock safe. The small marbles inside are available in a variety of colors. They recall days spent at the beach, when children bent down to play marbles on the shore, trying to keep them “on track". Set of 6 hand crafted tumblers Height - 3.5" Diameter - 3.5" Capacity - 15oz Dishwasher Safe