Cork Pops Nicholas Portside Flask Designed to resemble a porthole, this nautical-themed flask allows for an easy view of the contents Carry up to 4 ounces of beverage and see immediately when a refill is in order Crafted from polished stainless steel with a glass window, the flask is stylish and practical A screw top keeps contents secure and the container leak proof Easy to use and easy to clean, the flask makes a great gift for the guy with everything