DAY OFF TUMBLER is designed for a relaxing yet active day off. Vacuum insulated, it retains the temperature and flavour of drinks for a long time. With a rounded handle that is comfortable to hold, it is perfect for carrying around on walks or day trips. The bright colours are inspired by a relaxed beach resort and can match well with your day off fashion. For maximum insulation efficiency, preheat or precool the tumbler prior to use by filling in a bit of hot/cold water for 1-2 mins. Do not put in dry ice or carbonated beverage as the product may expand and break. You can use it with dairy products, fruit juices, and sports drinks but we recommend not leaving the drink inside for too long as it may spoil or cause rust on tumbler. Immediately wash and dry well after use, then store it away from other metals to prevent rust. Wash with care. Do not use abrasive cleansers or steel wool. Do not use chlorine bleach as it may cause rust. When rust spots are found inside the tumbler, add warm