I recently fractured a small bone in my wrist. My doctor gave me this splint and I ordered several similar ones from the internet.
This one is by far the most comfortable. As an extra added bonus, my tendonitis resolved, I purchased several others to give to friends who are dental hygienists as well, and suffer from similar repetitive stress disorders. After one hour of wearing it, my friend said her arm already felt better. She also commented that it was super comfortable and soothing, which I felt to be true, but I didn't want to oversell it.
I would recommend this product over several others that I have tried. I think the padded sides make a big difference in comfort, and I love the support and pain relief I have from chores that i previously found uncomfortable.