Yes the neon is that bright, in pink and green and blue -- these stripes light up my entire outfit. Polypropylene socks are soft and light and breathable.
The black stays black and the neon stays neon. Polypropylene is notoriously hard to dye after it is manufactured, so the color doesn’t fade and is easy to clean of all water-based stains (washing in cold water and hanging to dry).
Polypropylene does not believe in being wet. Whenever water gets onto it, it immediately determinedly dries itself. I’ve bought all the other wicking socks, but nothing compares to polypropylene’s enthusiasm.
Polypropylene’s thermal conductivity is lower than that of most fibers, so it keeps me warm in the winter without making me hot in the summer; I wear these socks year round.
Polypropylene is resistant to abrasion and has high tensile strength, so no quantity of my bouncing has ever gotten holes in these socks.