: If applied too tightly or without "double-locking" (which prevents the cuffs from tightening further), they can cut off blood flow [2].
: Being restrained in certain positions (like face down) can make breathing difficult and can be fatal [3]. 2. Legal Rights of Minors freeteenhandcuffed
: Professional escapologists always check the double-lock mechanism to ensure the cuffs don't tighten during a performance. : If applied too tightly or without "double-locking"