2-way drinking straw mug and tumbler, this insulated mug can be used by both babies and adults. 2-way: Replace the lid and use it as a straw mug or tumbler. Only one bottle is included. Slim shape: It can easily fit into the pocket of a mom bag or backpack. ● Easy to Clean & Hygienic: Simple shape with fewer parts, easy to clean. Includes a rim: Easy to hold even for small hands. Bottom cover included: Silicone material prevents scratches. Strap Hole: Convenient to carry. Can be used by adults: It can be used by moms as a tumbler. Product Name: Stainless steel portable flask (for cold insulation) [Components name/material/heat-resistant temperature/cold-resistant temperature/disinfection method/dishwasher dryer] silicone rubber; Heat resistant temperature: 284°F (-140°C), Cold resistance: -4°F (-20°C), Disinfection method: Boiling: Yes, Microwave: Yes, Dishwasher dryer, Dishwasher and bottom cover: Silicone rubber, Heat resistant temperature: 1. 40 degree / tolerance Cold temperature: -4°F (-20°C), Disinfection method: Boiling: ○/Chemical solution: ○, Microwave: Yes, Dishwasher and dryer: ○Polypropylene, Heat resistant temperature: 24°F (-120°C), Cold resistance: -4°F (-20°C), Disinfection Method: Boiling: ○/Chemical fluid: ×/Microwave: ×, Dishwasher dryer, ○