This was the second call of the G&S Family forged from the need to get a call that could stand up to any situation. From field to stage, this call has been able to stand along any call on the market. Each call is hand tuned to deliver the utmost clear sounding calls available. They handle the full range of sounds needed for Canadian geese, great volume without needing and air compressor to make notes. The Rainman has been a true producer in every flyway working on all subspecies of Canada geese. This delrin version offers the Rainman at an affordable cost for anyone.