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. The backpack's removable rolltop bag has a TPU lining that ensures odor, moisture and dirt doesn't spread to the rest of the bag. It's also easy to clean and is perfect for storing sports gear or dirty clothes. The carry-on bag has dedicated areas for electronics storage and a water bottle pocket. 

• 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
• Compliant with most airlines carry on requirements
• Outer shell fabric, lining, and mesh are made of 100% recycled polyester from recycled plastic bottles
• 600D waxed canvas shell fabric is highly durable and includes a water-resistant coating free of toxic PFCs that repels moisture, dirt, and stains
• All Thule Aion products are bluesign® certified
• Dimensions (LxWxH): 13 x 9.1 x 20.5 in
• Weight: 3.19 lb
• Volume: 40 L
• Material: Waxed P600 Polyester Canvas