Designed in Bondi Beach, Australia, these hand blown glass tumblers from SOL Cups are ethically produced using sustainable materials and are completely plastic free. Available in a variety of beautiful and attractive colors and come in 3 sizes. Made from borosilicate glass, these tumblers are very strong and sturdy and extremely durable yet incredibly light making them the perfect travel cup. SOL tumblers are sexy & sleek and are a reflection of your smaller environmental footprint, without sacrificing convenience. Easily take them with you wherever you go.