16 Piece Acrylic Tumbler Set - 14 & 22 oz Made from acrylic to provide glass-like clarity and greater durability Suitable for indoor or outdoor use Eight 22 fl oz / 650 ml Hiball Tumblers Eight 14 fl oz / 414 ml Double Old Fashioned Tumblers Top Rack Dishwasher Safe and Not for use in a microwave or for boiling hot liquids