The Slingshot RAD has undergone a complete transformation for 2014 and we are excited about the final product. This years RAD features a simplified design: fixed liner with a new velcro strap near the upper portion of the boot for a better fit and feel. The 2014 model still features the integrated heel-holddown system but it only has one lace for a quicker and easier entry/exit. The form fitted design makes the RAD comfortable and supportive whether you are riding behind the boat or hitting the cable park. Keep it simple and stop spending all your time with laces.. 1 and done!