Story Expandable backpack for both work and play Expanding up to 32 L for 15% more space, the multifunctional Thule Aion is perfect for trips where you need the extra wiggle room to pack what you need…but appreciate that it shrinks down to a solid size for day adventures. It fully unzips like a suitcase for easy access to your gear, a TPU-lined divider separates your damp or dirty clothes, and padded storage keeps your electronics safe and sound. A 100% recycled shell, lining, and mesh with a water-resistant finish guarantee the Aion is durable enough to keep up with even the most active guys. Features Expands from a 28L daypack to a 32L travel backpack for 15% more packable space Easy-to-clean TPU-lined compartment separates damp or dirty items Zippered top pocket keeps small items secure, organized, and within reach Quick-access external stash pocket helps store small items Padded storage protects a 15.6" PC/16" MacBook and 12.9" tablet Pass-through panel allows you to secure the backpack to rolling luggage Dedicated pocket keeps your water bottle secure and within reach Internal zippered pocket stores a phone, charger, and other small items External daisy chain allows you to attach items to the bag Materials Waxed P600 polyester canvas Outer shell fabric, lining, and mesh are 100% recycled polyester from recycled plastic bottles Highly durable 600D waxed canvas shell fabric with PFC-free water-resistant coating that repels moisture, dirt, and stains Imported Specs Volume: 28L Dimensions: 11 x 9.1 x 18.5 in Weight: 2.71 lb