Finger protector for Tsugaru-jamisen. Potteri Pro Size: Large 8cm x 3.5cm Color: Red Listing due to incorrect size. Potteri finger protectors have excellent elasticity, but the "Potteri PRO" is made with a special knitting method that makes it less likely to stretch vertically, providing superior fit and durability. Furthermore, the part that contacts the neck of the instrument is made wider, allowing for flexible response to the rapid movements characteristic of Tsugaru-jamisen. While retaining the best features of Potteri, this Pro series enhances the fit, operability, and durability, making it the highest quality Potteri series and a favorite of professionals.