The Wolfram Collar takes advantage of the word unique. This fully adjustable quick locking collar features a "size once and done" style for quick and easy wear and removal. You calibrate it by fitting the screws on the sides to your neck size once, then it easily comes on or off with a latch or locking post.
 
CONSTRUCTION
Following in the footsteps of the Wolfram Cuffs, this collar is also reinforced with ballistic nylon and steel. Its inner padding also ensures extraordinary comfort for long term wear both for scenes and for everyday use. House of Wolfram utilizes completely nickel-free hardware for any metal that may be in touch with skin. 
 
(One padlock included with the locking version. You may purchase additional padlocks HERE)