I got these as the mixed fluorescent color set. They glow nicely with a black light. Blue and purple look pretty similar with the black light.
I didn’t realize until I opened them that about 3/4 of the surface of each have a deep coral pattern while 1/4 is smoother. The smooth section is still textured just without the deep coral ribs and is generally opposite of the crimp side.
I installed these on a vertical wall. Some give really positive grips because of the coral, but they give the feeling of crimping a much smaller in-cut edge. Some have the coral pattern in different directions. You are not sure if you are going to get a positive grip until your hands are on it.
Excellent as foot jibs.