Speedo

As a swimmer I can't say anything bad about this brand, because I always purchased swimsuits, swim caps, glasses and equipment for trainings from this brand.
I remember I had trunks from speedo and was swimming in them for several years. No hint at fading or rubbing off. They were perfect.
Swimmers for competitions are also of high quality. As it's recommended not to use swimmers for more than 10-15 starts, I did everything according to this instruction and never was disenchanted.

I bought a pair of swimmers and they went from dark blue to light pink in 2 months!
They were so expensive and I will never buy this brand again!