Exervo Water Exercise and Aerobics Foam Pool Dumbbells Weights - Medium Resistance Pair - 14 Page Instructional Handbook Included Premium, cross-linked AquaComfort EVA foam Water resistant, UV resistant and bacteria resistant EVA foam Includes one pair of dumbbells with 3 inch thick x 6 inch round foam each end of dumbbell These dumbbells offer moderate resistance. Also available in Light, Heavy, Maximum & SuperMax resistances Includes simple instructional guide. Exervo quality.