This Tray makes four ice sticks that fit superbly into a Collins or highball glass, makes 4½" ice sticks. A top squares cooler flavors and a steel outline makes filling spill-proof. Sans bpa Silicone With an inside steel outline. An inflexible casing underpins the plate as you fill and transport it to the cooler, while autonomous ice molds make administering the ice sticks a breeze. Ideal for all your drink cooling needs.