CM joint support, also usable for tenosynovitis. For left hand, size L Purchased at a hand specialist surgeon's office. Used for 2-3 days, but it didn't fit me, so I'm selling it. Although not used much, the belt part is slightly dirty. Please understand that this is a used item before purchasing. ★ [Shipping Method] Shipped via Yu-Packet Post Mini. Please refrain from purchasing if you are concerned about minor details, as it is stored by a private individual. We do not accept claims or returns after purchase. Thank you for your understanding.