Our Eco-Friendly clear plastic cups are 100% made of corn. Karat Earth biodegradable cups are ideal for cold beverages (temp below 110º F). Please be sure to store this item below 110º F away from heat, hot surfaces and direct sunlight to prevent deformation. Boba Tea Direct will not be responsible for any damages during the transit due to temperature control. Rim size is 98mm, fits KE-KC626 and KE-KDL626 lids. Units Sold By: Per Case (1,000 cups)