Made from polymer infused textiles that are welded on all seams and use a genuine YKK water resistant zipper. The construction methods and materials used mean that these pouches are at home in hard use applications like tool storage or bulk storage of your reloaded ammunition as well as lighter duties like organizing your personal electronic accessories. Although these pouches are not 100% water proof (read submersible) they will keep your items dry under most wet weather situations making them a great choice for most outdoor adventures. This model has dimensions of 7″x12″ and a zipper opening of 8.5″.