Immobilizes the wrist and thumb. This is an Exos wrist brace in left TL, which slows down the development of degenerative diseases. The splint immobilizes the first metacarpal in neutral position preventing it from locking. It is designed to reduce pain and inflammation by not allowing mobility in the wrist and thumb. It is made of breathable fabric. It is waterproof so that the patient can get it wet and shower with it. It is prepared for use and good daily hygiene because, apart from being made of antimicrobial material, it eliminates bad smell. This splint is heated in a hot air oven, at a temperature high enough to soften the plastic inside. It fits over the person where it hardens. It is designed to get wet and is thermoformable to adapt to the anatomy.