Herschel Ultralight Backpack 22 LIntroducing Herschel Outdoor Equipment. Made with Ultralight ripstop fabric and an intuitive design, this 22L daypack has a built in hydration system and slip resistant pull tabs for extra grip when zipping. For safety, it features reflective details, a removable waist strap and sternum strap with a rescue whistle and more storage space for longer days outside. Compresses for easy storing. Reflective dimensions screen print detail 94% nylon, 6%