This Medical Id replacement Bracelet features Black Rubber silicone (rubber) and stainless steel lobster Clasps. It is 3 silicone strands attached together at the clasps. This strand will not stretch. Tags are sold separate, or attach your own tag. Tag sizes vary Usually between 1.25" - 2" in length. Please add the tags length to the strand to achieve your overall length. Example: If your tag is 1.5" long attaching it to a 6" strand your total length will be 7.5". Always allow a little wiggle room and do not orders bracelet (total length) to be your exact wrist size. Available in 5 Sizes! Strand Measures 5 inches (youth/small adult) Strand Measures 5.5 inches (small adult) Strand Measures 6 inches (average adult) Strand Measures 6.5 inches (average-large adult) Strand Measures 7 inches (larger adult)