The WaterRower M1 HiRise, a fully functional commercial model, has an entry point that is marginally higher (20"/50.8 cm) than the M1 LoRise (12"/30.48 cm). The frame is composed of powder-coated aluminum.

The "M1" and other commercial-grade steel rowing machines are part of the WaterRower M Series. The M Series models are made of steel tubing. The goal of the WaterRower's design was to mimic the fluid, flowing motion of a boat moving through the water. Rowing is a genuinely self-regulating exercise that is perfect for all users, from Olympic athletes to anyone seeking a rewarding personal workout; the WaterRower is appropriate for users of any age, gender, or fitness level.