This Upgraded flask is 201 stainless steel with laser welded joints. Also, the upgraded quality flasks are individually leak tested using a pressurized air and water system. The body of the flask is .4mm thick. When quality and value matter most you will want to choose the Upgraded quality flasks; they make great gifts!
Our flasks are safe! Our flasks comply with the tough California Proposition 65 restrictions on Lead and Cadmium. We performed independent testing by SGS, a leader in product testing, and found to be safe in accordance with these important consumer safety laws.
Each flask has been crafted with high quality brushed stainless steel and then laser welded at every seam to prevent leaks. The attached screw on cap makes it easy to open and securely close for when you want to stick it in your pocket after a quick drink. Give these gifts with confidence and enjoy them all day… or at least until they’re emptied.