Kodak Ektachrome 35mm Film. Shipped with USPS First Class.These 13 rolls have been stored near the bottom of a chest freezer at about -20 degrees F continuously since purchased. My experience with Kodak film stored frozen is that it lasts "forever." The film was purchased new, mostly likely from B&H where I got all my film. I had put the canisters in a ziploc and then in an unlabeled box and forgot about them, rediscovered this week. Of course, I cannot guarantee anything except that the film has been frozen since the day it arrived at my house. I routinely remove the canisters from their original box so you will receive the 13 rolls in the original ziploc bag. One data sheet is included. I opened one canister of the film at room temperature to check a couple details, but closed it immediately.