The 5 oz. Port Hole Flask is a unique round flask featuring a nautical glass port hole that allows the user to promptly recognize when they are in need of a refill. This product is considered a traditional Irish whiskey flask. It is designed and sourced by Distillery Products and made with high quality premium food grade 304 stainless steel. This product will be a conversation piece for your customers, especially when it features your custom engraved logo on its’ side. Each flask comes packaged in a custom designed gift box that will stand out in your gift shop.