This flask is made of 201 stainless steel, which is easy to grip and can be easily hidden in your jeans pocket, blazer, bag, purse, fishing box or hunting jacket. Perfect for all outdoor activities such as fishing, camping, hunting, hiking, wedding parties, travel. You can drink with your friends or dear friends anytime and anywhere. The cap seals tightly to make sure no vodka, whiskey, bourbon or other favorite beverage will leak out and get wasted. Orders of 2000 pieces or greater are eligible for sea shipping. 100% guarantee for quality.