zeyu sports aquatic exercise dumbbells - set of 2 - for water aerobics (purple) zeyu sports these easy to store aquatic barbells are a perfect addition to your water aerobics workout. they come as a set of 2 and each weighs .66lbs. made from eva foam, they measure 11"long x 6"wide. while the eva foam has low water absorption, we recommend storing the weights on end in a tray so any water that may have accumulated can drain. the resistance of the barbells will provide an overall workout for your upper body, lower back and abs. warning: these are not to be used as a flotation device.