Because it is very painful to hit with a bare-hand leather mounted with the thick, long hemp rope, "finger leather (Yubikawa)" are worn on the middle finger and the ring finger with "leather (Ategawa)" placed on the palm.
太く長い調緒を使って張りつめた皮を素手で打つのは大変痛いので、中指や薬指に「指皮」をはめ、掌（てのひら）に「当て皮」をつける。