I buy these to add a little more challenge to my step aerobic . it be help to bring my heart rate up faster and help to tone my arm , which be exactly what I be look for . I like the neoprene coating since the weight do not get slippery even when I start sweating . my only complaint would be that the stand be a little flimsy . even so , I be happy with the value I get for my money . I may be buy another set because my husband have also start use they during we workout and we sometimes want the same weight .