I have been loving my FLUR cups as I am an avid coffee and matcha drinker. I was devastated when my one of my cups was broken behind my back, however FLUR's warranty of a free replacement cup came in clutch! Even without the picture of my broken cup as asked when submitting a warranty claim form, they still honored my claim and I was deeply grateful! The customer service team was kind, caring, and speedy throughout the process. I would definitely recommend these glasses to friends and family!