What is the length of the shirt from collar to bottom for l and xl? i hate when you lift your arms and people can see the belly.

I don't know the exact length, but these shirts fit much smaller than other shirts in the same size range. I was forced to return them.

Can the shirts be put into dryer?

You definitely do not want to moisture wicking clothes in the dryer. What allows the moisture to wick are tiny gaps in the weaves. And since workout wear is made out of plastic (spandex, polyester, etc...), heat will cause the fibers to soften and blend together, closing those gaps. Leave it hanging to dry, it'll dry very fast.

Hello, I would like to order in M size. Would you have more ?

I ordered XL because I thought they would run smaller. But I had to send them back because these shirts are actually very true to size. If you have a large middle section (belly) they might be a little small on you.