I really like the protection that this Session (Session 5) case offers but would like it even more if it had slots for a strap so I added them to it. This is a very tight fitting case and should only be printed in flexible filament with a 60-100% infill. Supports are not needed when it is printed with the back of the case on the print bed like it is shown in the rendering.
Don't be afraid to stretch the opening so the camera will go in easier.
The case can not be seen in recorded video, even in SuperView.
May 03, 2017: Added another version with a slightly larger opening which makes inserting and removing the Session a little easier.
March 27, 2018: Added a new version with more protection and easier removal of the Session from the sleeve: https://www.thingiverse.com/thing:2841636
April 6, 2018 Added a version of the new sleeve without the strap slots: https://www.thingiverse.com/thing:2852274
This can be printed without supports.