Angemay Advantage : Angemay airplane footrest use three nails and two straps to form a triangle,more sturdy and durables.We have lengthened the staps length extra 25.6 inch for the customers' advice, and we also added a lock to reinforce the strap. Adjustable strap designed to suit exactly your height, the min length 17" to the max length 32" (appr.) The travel footrest suitable for different people, whether you are men,women, kids, adult or child. Please hook the string part of the footrest onto sides of any desk and place your feet in footrest.You're free to adjust the length of the rope to keep your feet in the most comfortable position. Swing your legs to relieve fatigue.