This particular tape is not precut or pre-perforated. Since I am only 5ft 2 in, sometimes the precut (or perforated) tape is way too long on my shoulders and feet. It was nice to cut the tape to the exact dimensions of my shoulder instead of having the tape extend down to my elbow. People don't know what part of my arm is being supported because the precut is sooooo long on me. People can't tell if I'm trying to wrap my elbow, forearm, bicep, tricep, or shoulder with the precut tape. Also, the hot pink tape makes it fun to wear in the summertime (or anytime, really).