This is a truly minimalist wallet. It is designed for runners to fit in smallest pockets of shorts or belts and the new version weights only 2.25 grams. It fits cards and folded cash, but you can also stash other small valuables. The roll top closure with Velcro and the glued 1.43oz Dyneema® Composite Fabric (DCF) make it quite water resistant. This durable material is chosen to withstand abrasion and last for a long time.