Scicon Pin Roller Cordura Saddle Bag. Be ready for anything with the Scicon Pin Roller saddle bag. It's a tough Cordura saddle bag that's roomy enough to store all the essentials for a long ride. With 11.8 oz of storage space, you'll be able to cram in your tools, phone, a snack, keys and pretty much anything else you think you may need to bring along. It fits snugly under your saddle with a solid, bracket-style clamping mechanism, so there's no swaying rubbing or jangling whenever you stand up out of the saddle.. Roller 2.1 is a system which allows you to fix your bag under your saddle with a clamp which grips to any saddle rails. You don't need any tools and there is a wheel that can be tightened easily by hand. When the clamp is fixed you can fit the bag with a simple twist onto the bracket it's secure, light and very safe. Unlike other bags that use straps that rub against the thigh panels of your cycling shorts or clamps that need to be screwed on with nuts and bolts, with Roller 2.1 you can remove the bag and the clamp in few seconds. This is useful when cleaning the bike and often critical during races.