after jamming and hyper-extending my thumbs countless ammounts of times i finally injured it enough to have to wear a splint for a good while.. i got a new one from this little physicall thereapy shop in pc, utah has a woman that makes these things and i got one today. she was telling me how tons of pros have come in and got them and how she sells over 400 per season usually. she said that some people come in even when they're not injured and just get them kind of as a safety thing. anyway i think it kicks ass, it fits perfectly under my glove and i can still hold a pole. i'm going to keep no-poling it through the end of this week and my thumb is fully healed (its still pretty weak)
pics below.
the red velcro strap makes it where you can take it on and off or loosten it to type at the computer like i am now. they're sick.
