Just got a goal zero solar panel. It's pretty cool. But. The instructions say not to charge devices when they're in the handy back pocket cuz they'll get super hot. :( This should work for any solar panel that has a pocket in the back to charge devices.
Step 1: You're Not Supposed to Charge Stuff When It's in the Pocket
Step 2: Get Some Magic Sunshade Stuff
All you need for this project:
Double bubble stick tape
Step 3: Cut It Out
Step 4: Test Fit
Step 5: Put Strips of Double Stick On
Step 6: Done!
Now you still shouldn't charge items in the back pocket but if you accidentally did they, in theory would be a lot cooler. Yah.