You may benefit from the iRLAX.
Recently, we also supply the iRLAX in addition to our other products.
This is an ergonomic universal support for the forearm.
This will automatically make you sit more upright.
By correcting the posture, you may prevent muscle pain in the back, shoulders or arms.
Other advantages:
compact;
easy to carry;
can be attached to almost any table and desk.