Stanley Master Flask 8oz with Never-Lose Cap, Wide Mouth Stainless Steel Hip Flask for Easy Filling & Pouring, Insulated BPA-Free Leak-Proof Flask

The 8 ounce Stanley Master flask, with cold-rolled steel finished in the perfect Foundry Black powder coat, surely lives up to its name. The tool-styled finished cap was crafted with internal threads for a smooth lip land with every swig. Pass it around to share with others, but make sure you get it back! How to deep clean your master flask: what you'll need: 1/4 cup Uncooked rice and 3oz distilled white vinegar instructions: pour 1/4 cup of uncooked rice into flask fill flask with 3oz Of distilled white vinegar seal flask shake vigorously for 1 minute. Let sit for 5-10 minutes (Do not soak for extended period of time - a vinegar soak will eventually corrode stainless steel)shake vigorously again for 1-2 minutes empty flask. /li>Rinse thoroughly with warm waterleaves open until dry