1，Made of food-grade safety high borosilicate glass, BPA-free and lead-free. Reusable and dishwasher safe. The choice for environmentalists.
2，No metal aftertaste, the touch of teeth and lips is comfortable. Non-toxic can be used frequently and will not harm your health.
3，Easy to clean with the included brush. You can actually see the stain inside the transparent straw.
4，Use for large families or dinner parties.
5，Christmas gifts. Worry-free shopping experience with a lifetime warranty. We will always be behind you.