The ISHI is made of strong, compliant polyurethane, and designed to fit onto most archery bows or fishing rods. For archery, a special offset flexible aperture captures the bow’s handle and allows the bow to nest comfortably providing the perfect alignment for accurate arrow flight. A ratchet strap and buckle system lightly secure the bow in place without inducing any torque into the system. The standard ISHI can be used safely with bows with up to 20.4kg of draw weight for archers as young as five years old through young adulthood. The Heavy Duty ISHI can handle bows with weights up to 31kg and is recommended for medium to heavier fishing applications. The ISHI weighs 170 grams, mounts both right or left-handed and is equipped with a USA standard, threaded mounting connector.