Core Trainer Neoprene Sweat Waist BandA velcro closure waist belt, our Core Trainer Neoprene Sweat Waist Band is latex free made from a neoprene that is comfortable yet strong. This work out band will cinch your waist and instantly improve your posture and slim the whole midsection. This is an ideal option for those looking for a trainer to wear for working out and exercising as it increases sweat and perspiration to rid the body of unwanted toxins resulting in a loss of water weight.