Between March 23 and March 27, we will be upgrading our systems.
During this time, orders may take longer to ship than usual. Any delays are reflected in your estimated delivery times. Please also note that express shipping will not be available during this period.
We apologize for any inconvenience.
Our ultralight women's AT 55 backpack is perfect for the backpacker who likes to go fast and light but still wants a full complement of technical features.
In 2013 we took this bestselling backpack and made it even better, with new front-load access with a waterproof zipper, a new hood with a secure two-point connection and simplified side compression straps. This pack also features a unique trampoline suspension system that allows fresh air to pass between the pack and your back – keeping you cool and comfortable.
Questions? Chat with an Expert