Swarovski BP Backpack 30The Swarovski BP Backpack 30 is the perfect vehicle for your optics gear on a long day hike. The 30 stands for 30 liters, which means it's large enough for your binoculars, spotting scope, a jacket and gloves, and some other small items. External straps will support your tripod, auxiliary straps connected to the shoulder straps connect to your binocular, and side pockets can hold your food, batteries, and other critical gear. The BP Backpack 30 is