FlentsQuickie Finger Splint, Protects Injured Finger, Toad-Shaped, Foam Absorbs Shock, Medium

This has a different shape than standard splints. It works well enough, but the tongues that wrap around the top of your finger kind of project out to the side, and the other fingers rub against them a bit. I think over a long span of time, you might end up with raw spots. You could probably just put tape around them to eliminate the sharp edges.

Worked to keep my finger straight until I got professional help.