Exervo Water Aerobics and Exercise Foam Pool Dumbbells Weights Combo Set - Heavy and Maximum Resistance Pairs - Free Mesh Dry Bag -14 Page Instructional Booklet Included Premium, cross-linked Exervo AquaComfort EVA foam for durability UV & bacteria resistant plus water beads right off EVA foam for super fast drying Includes one pair each of heavy & max dumbbells to vary resistance. Our best Combo Set These dumbbells offer moderate to difficult resistance for most users. Also available in Light, Medium and SuperMax resistances Free 14 page instructional starter guide and storage mesh dry sack