The main body material is a thickly ribbed twill fabric using 1260D yarn made from Toray's Farillo ® in the vertical and horizontal directions. Farillo® is a hollow nylon material with a unique luster and texture due to its special hollow structure. Similar material is 20% lighter than 1260d, yet thicker and has just the right amount of firmness. The finish is water repellent. The bottom is a 3-layer fabric using CORDURA® brand fabric's Hollofil AirTM (66 nylon hollow fiber), an original highly durable and highly water resistant fabric. The included suede is made from thick North American leather that is tanned with chrome and then carefully buffed with sandpaper to create a finely brushed finish. Because the leather is thick and sturdy, the dyeing process is divided into two stages, and a waterproofing agent is added during the dyeing process to make the suede highly waterproof. The leather used for the handles and other parts is tanned with 100% tannin, resulting in a thick and sturdy leather that will age well. This series features a combination of high-strength, highly water-repellent materials and a military-style daisy chain with the brand logo framed by eyelets.