This Heavy Duty posture collar will keep your submissive's head help upright. The tall neck collar has a chin rest to keep neck and head firmly in place. Thick latigo belt leather that has rolled edges makeup the main part of this collar, with the rolled edges being both at the top and the bottom. The adjustable wraparound strap locks the collar on with a locking post. There's also One 'D' ring in front and two on the sides near the back as attachment points. Height is 3" in back and 4" in front. This is a very substantial collar and not really for newbies. Shown in the B&W photo with Fetters Padded Blindfold, HT40, and Thick Spandex Hood, SP21. Also shown with the Deluxe Ball Gag (HT065) and the Spandex hood with eyes and mouth holes (SP039). Kept in this position, with this kind of gear on one's head... your boy will become very submissive very quickly. This collar is very adjustable as to tightness and the size neck it can accommodate (from 14" to 17")