as the previous speaker / writer

My T-Shirts (about 5 black, white 5 greyed out) are since 3+ years of use and each time the 100+ Waeschesack at 60 degrees Celsius have since estimated washed. Use under his shirt in the office and for sport. Failure: 0 - no solution, no seams broken, packed size, optimal.

Good sweat absorber. No ultimate bacteria killer, but not bad.
Black better than white; white gray well from temperature-related and can not be retrieved with aluminum / salt.

Black takes color damage with the use of chlorine bleach (then also gray).
Weiss is possibly go (Camping / Survival) better for Chlorwaesche.

Caution for campfires / fire (prohibition of Under Armor in the US Army) - the material will melt into the skin.

Good to wear with cotton clothes or even pure for Sport - grade the black with its pseudo "Mercedes" -Brustkorb look.