Peak Design BTR-45-DS-3 Travel Backpack (Ocean, 45L) There are four user-programmable function

There are four user-programmable function buttons around the housing

74x-magnification OLED viewfinder is featured with a 2

Fast Aperture Wide-Angle Prime

Weather-Sealed Design & Fluorine Coating

Sporting a revised 24

Peak Design BTR-45-DS-3 Travel Backpack (Ocean, 45L) There are four user-programmable functionPeak Design Travel Backpack Overview Key Features Versatile, Multi Configuration Backpack Spacious, Expands from 30 to 45L Designed for Internal Compartment System Compartments for Gear, Clothes Rear, Front, and Side Access 15" Laptop and 10" Tablet Pockets Hidden Side Pockets, Front Pocket Organizational Pockets 2 Bottle Pockets Tripod, Monopod Holders 4 Exterior Handles, Weather Resistant The Travel Backpack from Peak Design has expansion zippers