aqualogix medium resistance all-purpose aquatic bell set - smoke - upper body pool exercise dumbbells - includes link to demonstration video and workout (bells pair mrpcbell) aqualogix aqualogix aqua bells provide dynamic all purpose cardio and strength drag resistance training. hand held omni-directional resistance pool training equipment. most effective for water aerobics, upper body and core specific training. high intensity, low impact training for all fitness levels. most effective when used in conjunction with the lower body aquatic blades. turn any pool into your new gym.