soft plastic role of approximately 10 cm long and 3 cm in diameter with an elastic band which is put on the fingers and the palm is placed in the role and purpose during the run in to pinch fingers slightly to prevent swelling.

摘要

The roll has an elastic band, which is pushed over the fingers, where the roll is 10 cm long and 3 cm in diameter. The roll is placed in the palm for squeezing with the fingers during running or walking.