Arno Kromdijk
"As a starting runner, I was regularly confronted with lower back pain. Because I still want to work out, I started looking for a shirt that could provide extra support. At first I thought that the Knapman shirts were only for people with an overweight problem, but now I walk twice a week for almost a year now and don't go out without my compression shirt.
I keep it full longer and besides that it gives good support, it also dresses nicely! I think many athletes will benefit from these shirts. You automatically walk upright and as a result you make more kilometers with the same effort."
with the standard underwear sizes. The above table can be used to check