Can this go from hot to cold?

It's made of boroscilicate glass, which is very tolerant of temperature changes . You can add ice to it without it cracking, but you need to gently add the ice cubes in

(not drop them in)

Can I use a dishwasher to clean this?

The cup can be cleaned in the dishwasher, but the lid must be washed by hand

Are there any special care instructions for maintaining the bamboo lid?

It is recommended to hand wash the bamboo lid of the to maintain its quality and longevity.

Can the Glass Tumbler fit in standard cup holders in cars?

Yes, the Tronco Glass Tumbler is designed to fit in standard cup holders, making it perfect for use on the go.

Is the Tronco Glass Tumbler suitable for hot beverages like coffee?

Yes, the Tronco Glass Tumbler is suitable for hot beverages such as coffee, as well as cold drinks like juice and smoothies.