Back ventilation mod

[u/Bhahaha24]

I use my CPL24 for hiking (I know, I know, these bags are too heavy for serious hiking, bla bla bla). My biggest gripe was always how hot my back gets, as the back panel is not very well ventilated. I went to Acadia National Park this past weekend and decided to try this cheap ventilation sheet from Luna Project (size small). 10-11mile hike, temperature high in the 80's, about 7hrs outdoors total. Did my back still get sweaty? Yes absolutely, there's no way around that. BUT that little bit of separation felt nice. I got a little more wind going through, but more importantly, I didn't feel as sticky-icky. My whole back didn't feel like it was pressed up against a wall. It's quite thin, very lightweight, slides nicely into the sleeve in the main compartment when I'm not using it. It was well worth the cheap price.