I just discovered a very useful way to improve my comfort and posture while sitting in chairs not my own. If you travel a lot or are constantly changing workstations or just want to improve your current set up – buy contact shelf lining, the one with no-slip grip.

The liner adds grip to chairs that either 1. do not adequately recline or 2. reclines but you may tend to slide off (slippery leather chairs). Recently I was provided with a stiff non-reclining wood chair and it was killing my back. Every time I relaxed into the back rest I started to slide down and my posture was terrible and my back hurt. I picked mine up at target

I can't believe it took me this long to discover this, it has greatly improved my comfort.

Edit: In case directions are necessary, place the liner (cut to appropriate length) on the seat not the back rest.