The micro flask will be a nice gift for yourself, your loved ones and your children that you will use for many years. you can easily use it at school, sports, nature walks, in the car and many other areas. it is made of healthy steel material that does not cause odor. micro 500 ml steel flask features: 500 ml liquid capacity durable body suitable for hot and cold drinks between -10 and +90 degrees suitable for outdoor use does not contain harmful substances, absolutely safe for the health of children and adults lockable lid system does not allow the lid to be opened in a backpack easy to carry or hang anywhere with its stylish hanger Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.