? Fitness Chest Expander- is Made with natural rubber (latex) made resistance band tubes. ? chest expander includes 5 resistance bands removable that can adjust the intensity. ?Building Your Pectoral Muscle, Shoulder, Triceps and Overall Body Muscle provide a comfortable grip. ?Fully adjustable resistance springs can be removed or added to add extra resistance to your workout. The products in our shop will be carefully selected before shipment, and then shipped to you. If you have any questions, please contact us at any time, we will usually reply to any message within 3 hours, no more than 8 hours. Our current delivery time will be about 10 days earlier than Amazon, please rest assured single.