Emperor PET Clear Cold-Serve Cups are available in various sizes and lid styles, with straws available. PET (Polyethylene Terephthalate) plastic provides clear visibility and strength, perfect for serving brightly coloured smoothies, slushies, iced-coffees and milkshakes. PET is globally recognized as a safe, non-toxic, strong, lightweight, flexible material that is 100% recyclable (as long as food contamination is avoided). As the most widely recycled plastic in NZ, all council recycling programs accept PET packaging.