The spout has been especially designed to fit our Aqua range tumblers in 280ml and 350ml capacities (Product Codes: IMC.908300 & IMC.909300) The spout is made of high quality elasto material, which is virtually unbreakable and has a pleasant feel. This product is dishwasher safe. Popular in the healthcare sector, from hospitals, to nursing and care homes. Also a very practical item for nurseries or home users. BPA free. Very lightweight, safe and easy to use.