It is rustfree, sweat free, durable and dishwasher safe.

TEMPRATURE CONTROLLER: Double-layer vacuum insulation technology keeps the beverage warm or cold for a long time and is suitable for all seasons.  The outside temperature will not transfer inside the gourd!

LID & STRAW: Multi-Function Lid is BPA-free, the surface of the lid has a straw hole design, which can be used  for sipping any other drink. and wide mouth easy to clear. 

Stainless steel mugs are an excellent choice for a number of reasons: Durability: These mugs are very sturdy and can withstand the wear and tear of daily use. They are resistant to dents, scratches, and corrosion, making them a long-lasting and reliable choice compared to other materials. EASY MAINTENANCE: Cleaning your stainless steel tumbler is a breeze. They are generally dishwasher safe and can also be easily hand washed. This makes them a convenient and low-maintenance option for everyday use. Temperature Regulation: Stainless steel has excellent thermal properties, which means it can effectively maintain the temperature of your beverage for a long time. This makes stainless steel mugs perfect for keeping drinks hot or cold depending on your preference. Environmentally friendly: One of the outstanding features of stainless steel cups is that they are reusable. By choosing to use stainless steel cups, you can significantly reduce your reliance on disposable cups, which is a positive step towards a more sustainable and environmentally friendly lifestyle. SAFE: Stainless steel is a non-toxic, non-reactive material, ensuring it won't leach harmful chemicals into your beverage. This makes it a safe and healthy choice for storing and drinking a variety of beverages. Overall, stainless steel tumblers are a practical, sustainable, and safe option for those who want to enjoy their favorite beverages with added durability and convenience.