Pop Out Ice Cube Tray - BPA Free Dishwasher Safe Portable Novelty Flexible Silicone Ice Cube Maker - Just Press to Push Half Round Ice Cubes Into Drinks, Glasses. Color Purple by Perfect Life Ideas Small half-round cubes approximately 1 diameter fits into most sport bottles. Trays can nest and stack when not in use to save storage space. Ice Cube Tray with Rubber Bottom Make 21 Half Round Ice Cubes Per Tray. Just Press bottom to pop out ice cubes directly into drink or glass or sports water bottle. Quick, easy and convenient. Durable BPA Free material construction. Dishwasher Safe Put directly into sports bottles, drinking cups, drinking bottles, kids water bottle.