PurAthletics Neoprene Walking Weights 2x2lb"Using additional weights burns more calories and increases cardiovascular fitness. The extra weight tones and strengthens muscles. Use weights for aerobic, toning exercises and walking.Soft covered weightsIron sand filledAdjustable strap for a comfortable fitBuilding more muscle will not only make your cardio sessions easier but help you burn extra calories while doing aerobic conditioning. Target the upper and lower body for a revolutionary strength training workout using Ankle and Wrist Weights. These weights feature a contoured design for a custom fit on your ankles or wrists. The soft terrycloth interior absorbs moisture brought on by sweat and is non-abrasive on the skin. Its grip-strips can be securely fastened around the ankles and wrists to your desired fit. For extra endurance during your nighttime run, your weights include a reflective trim so cars and other vehicles can see you. These one-size fits all weights will help you strengthen and tone the biceps, triceps, hips, thighs and calves."