The Zen Finnhook has been developed after years of practical experience. The results have been very postive. The Acute hook has been developed for everyone who suffers from neck pains, shoulder pains or back pains. The Zen Acute hook is of birch plywood and is a simple and effective release of muscle tension. It is a Scandinavian innovation. the Zen Acute Hook is an excellent method to relieve computer related muscle pains. The Zen Acute Hook easily massages acupuncture and reflexology points .