The Canmore Pipe bag is made of a Gore-Tex material that has a pinhole-free fabric and fully sealed stitching. This bag is requires virtually no maintenance  (no seasoning, naturally supple, pick up and play at any time). The fabric has automatic moisture control. The Canmore pipe bag is basically a no tying-in bag where you only need to tie in chanter stock. All other stocks are a friction fit. The Canmore bag is available with or without zipper and available in sizes small, medium, large and goose. If you are looking at a new pipe bag and would like to have either internal moisture systems, or drone systems, then it is important to look at a zippered pipe bag.