Built tough and ready to roll, this classic flask from Stanley says goodbye to tricky funnels and flimsy flasks. Crafted from 18/8 stainless steel, it’s BPA-free and leakproof, making it a reliable option no matter where you find yourself. The wide mouth opening means you can pour, refill, or rinse without complications, and it weighs under a half pound which makes it compact enough for the trail or your next tailgate.