Puncture Resistant Water Proof Heavy Duty 10 Mil Material - LARGE 15" X 12" - MEDIUM 13" X 10" The Ultimate Storage Bags by Fitzgerald Fishing are designed to store any and all items in your boat and keep you more organized. With a heavy duty seal and super thick design they will replace all of your cheap sandwich style bags that fall apart all the time. Great for storing soft plastics, reels, fishing line, tools and clothing.