Features Enter your model number to make sure this fits. Air Channel back system Lightweight frame Tip Grippers Hipbelt pockets Large stretch mesh side pockets Description Product Description If you need a multi-day pack for backcountry hiking with an expandable capacity, the Lowe Alpine Eclipse 45:55 Backpack gives you all the features you want and need without any of the added weight you don't. Featuring a side entry system that lets you get at your main compartment without having to lay the pack down on wet or muddy ground, the Eclipse 45:55 Backpack has the unique aerator back panel that's adjustable in length and has added ventilation channels across the back to keep you cool and comfortable no matter what kind of terrain you're scaling. Plenty of pockets let you organize your gear, like the hip belt pockets for small essentials, a large stretch front pocket for a helmet or your rain coat, an internal zippered pocket, and large stretch mesh side pockets. There's even an internal pocket to hold your hydration reservoir that includes exit ports for your hose to keep you hydrated on long hikes. The Eclipse 45:55 Backpack also features unique tip grippers that can hold either poles with spikes or those with rubber caps. Some of the other highly functional features include external lash points for other gear, an ice axe loops, an integrated rain cover, and an LED light loop or adventure race tow loop. The Eclipse 45:55 Backpack is also designed with an additional frame for better load carrying, making it your best companion for lightweight backpacking.