Pioneer Molecule Card Holder is probably the most durable wallet on the market; it is slim, well designed, and, most importantly - minimalist. The wallet comes in five different colors: Black, Onyx, Blue, Evergreen, and Slate. Moreover, the cardholder can hold between 4 - 6 cards or more and can hold folded bills and still look minimalist and suitable. Furthermore, when we mention durability, we mean than it is Waterproof and can be machine washable for all-conditions. The material of the Pioneer Molecule is stronger and slimmer than leather. The wallet made of 10XD and 3PN. The 10XD is 10x stronger than steel - "ultra-high-molecular-weight-polyethylene" is what makes the main feature of this fine cardholder.