“This little accessory is a must. no neck strain trying to hold your head up. It allows for a more relaxed feeling while in the swing. Highly reccomend.”
Depends on what swing you are using, but if you are using a screamer dual hook swing for example, lenghten the chains to lower the entire swing and then shorten the main straps to raise it back up. This will make the headrest straps appear to be longer.