Herschel survey 17.5 liter waterproof milk backpack. Designed for everyday travel, the Survey™ Backpack combines style and functionality with a compact, weather-resistant design. Made from 100% recycled polyester (excluding trim) and featuring a matte TPE coating, it offers extra protection from rain and moisture. The interior is optimized with a padded 15"/16" laptop sleeve, mesh organizational pockets, a key clip, and a hidden zippered pocket. Complete with a magnetic closure, dual side water bottle pockets, and a reinforced base, it's the perfect companion for navigating the city with practicality and security.