![Thule Aion Backpack 40L](https://www.thule.com/-/p/fvcFtA_61EIa_da3s18nkSZ2wYCSWwpwxsFfIqv6Z-E/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/10/56/1411056.jpg)
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
![Thule Aion Backpack 40L](https://www.thule.com/-/p/Yo4SyYofFaTw3eUEavAZxwbZIbajIqkl_pbd1wBbCC4/rs:fit/f:avif/cb:1.4/q:80/plain/approved/std.lang.all/10/64/1411064.jpg)
Compatible with the Thule Aion Sling Bag which doubles up as a supportive hip belt (sold separately)
![Thule Aion Backpack 40L](https://www.thule.com/-/p/_cjqHAlluMZsunpxWQsiD9WdLcT0aj9gxaTU5-bf-ns/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/10/58/1411058.jpg)
Zippered top pocket keeps small items secure, organized and within reach
![Thule Aion Backpack 40L](https://www.thule.com/-/p/xccbJZTdnCrn2mvs2T4wEbUoqsJZ7TT2b_UQGBAU8Bs/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/10/59/1411059.jpg)
Padded storage protects a 15.6″ PC/16″ MacBook and 12.9″ tablet
![Thule Aion Backpack 40L](https://www.thule.com/-/p/uhgTVrw_AvRtyzLSlNXSgj-zEllNFAgNzYwh_ff9Ud4/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/10/60/1411060.jpg)
Dedicated water bottle pocket keeps your bottle secure and within reach
![Thule Aion Backpack 40L](https://www.thule.com/-/p/IJrrRIONOvh9wyGEWE5BQNa-mFcW7hL_0e6kZfpafJ8/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/10/61/1411061.jpg)
Internal zippered pocket stores a phone, charger and other small items during travel
![Thule Aion Backpack 40L](https://www.thule.com/-/p/6TAKxAlQeebSNPq7b98SNDYIeHOMx0uJQw3DmnBWqlM/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/10/62/1411062.jpg)
Internal compression straps keep items secure during travel
![Thule Aion Backpack 40L](https://www.thule.com/-/p/AFY9Oko9yp7j5XXr5jG_-g-gVUOYkNshO9dh0SnUvoE/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/53/27/1415327.jpg)
Exterior zipper sliders can be locked together for added security (locks sold separately)
![Thule Aion Backpack 40L](https://www.thule.com/-/p/DElM-xRkxs6gq-lzHSb54fD_MaQBCHwfxeC1T0CA1pk/rs:fit/f:avif/cb:1.2/q:80/plain/approved/std.lang.all/22/67/1412267.jpg)
Outer shell fabric, lining, and mesh are made of 100% recycled polyester from recycled plastic bottles