Our costrel is a styled after an 18th century pattern. the body of the barrel is one solid piece of leather with two end pieces. We sand form every costrel by hand, just like the originals. Like other Samson Leather drinking vessels, the costrel is lined with a durable food grade resin, making it safe to carry your beverage from the tavern or from camp to camp.
I purchased this at the Ft. Frederick Market fair this year and have used it twice so far for water. I find that the volume is good for a day's work in the fields demonstrating training / fighting skills of a Highlander. It's far better than trying to hide plastic water bottles in a sack or under a hay bale. I just wish that it came with a stopper, as for now I lay a piece of deer skin over it to keep it closed.