Thule Aion 40L travel backpack features a removable rolltop bag and has the maximum capacity still classified as carry-on compliant, making it the perfect backpack for air travel.

Key Features 

• Removable TPU rolltop bag tucks away after use and allows you to store items without odor, dirt or moisture spreading to the rest the bag
• Compatible with the Thule Aion Sling Bag which doubles up as a supportive hip belt (sold separately)
• Zippered top pocket keeps small items secure, organized and within reach
• Padded storage protects a 15.6" PC/16" MacBook and 12.9" tablet  
• Dedicated water bottle pocket keeps your bottle secure and within reach
• Internal zippered pocket stores a phone, charger and other small items during travel 
• Internal compression straps keep items secure during travel
• Exterior zipper sliders can be locked together for added security (locks sold separately)
• Outer shell fabric, lining, and mesh are made of 100% recycled polyester from recycled plastic bottles
• The 600D waxed canvas shell fabric is highly durable and includes a water-resistant coating free of toxic PFCs that repels moisture, dirt, and stains