The Epitact Thumb Support was developed for people suffering from pain in the trapeziometacarpal joint, often caused by rhizarthrosis or repetitive overload of the thumb. Its flexible structure keeps the thumb in a functional resting position, reducing movements that aggravate pain, without limiting the mobility of the other fingers. Thanks to the patented EPITHELIUMFLEX® tendon, the orthosis slightly increases the space between the thumb and index finger, stabilizing the joint and preserving local heat, which contributes to a natural analgesic effect. It allows you to write, drive, use your mobile phone, work or perform household chores while maintaining hand functionality. Its ultra-thin, flexible and discreet design adapts easily under clothing and allows you to wear watches or jewelry without discomfort. It has no Velcro closures, preventing damage to clothing and providing greater comfort during prolonged use. This version is for the right hand, size M, recommended for a wrist circumference between 15 and 17 cm. The orthosis is machine washable at 40°C and maintains its effectiveness for several months of normal use.