GripStrip Lace Liquid silicone rubber printed lace produces superior knot hold and waist grip PainFree Flex Buckle NO poking, pinching, or pain caused by traditional belts and buckles. ButtonLock Technology Waist Lace buckle system easily connects to the button on the users pants/shorts. This results in a sturdy, centered buckle that seamlessly supports and compliments the GripStrip Lace. CordKeeper Technology Built in headphone port catches extra cord slack to prevent earbuds from pulling out during intense activity.