Gregory Zulu 30 SM/MD Men's 15-19IN Backpack Back Length: 15-19 inches Size: SM/MD (Small/Medium) Includes Rain Cover Product Features: * QuickStow for sunglasses on the shoulder harness. Allows for quick, safe, and scratch-free handling of sunglasses while wearing the pack. * U-zip main opening on the front that opens from top to bottom, making it easy to load and unload gear at camp. * Includes a custom-designed rain cover. Stored in a zippered pocket behind the front mesh pocket for quick access. * Oversized hipbelt pockets for storing cell phones and compact cameras. * Stretch mesh side pockets on both sides. * Adjustable attachment loops and hook attachments for securing trekking poles and ice axes. * Chest strap also functions as a whistle.