Used about 3 times when going out. Topologie / Topologie] ■ Chalk Bumbag, chalk bum bag, bag, small bag ■ Size: H21 x W15 x D10.5 (cm) ■ Material: Nylon (water-repellent coating) ■ Specifications: Ultra-lightweight, water-repellent, capacity 3L The "Chalk Bumbag". As the name suggests, it's a compact shoulder bag with a design inspired by a climbing "chalk bag". It uses lightweight, water-repellent washed nylon. Despite its compact size of 3L, it has more capacity than it looks, easily accommodating wallets, smartphones, pouches, and even tumblers, making it a valuable item for going out. Popular black.