I'm very satisfied with the shirt. The quality and workmanship is very good. The size M at 1,72m and 72kg (Chest 106cm, waist 81cm) fits perfectly with very good compression. The sleeves go to the elbow which is also optimal. As already mentioned is in the armpits no seam, no scrubs - optimal. Compression is very noticeable and is not unpleasant. The combined materials are optimally matched (rear perforated material). I use the shirt exclusively for running several times a week. Detectable by the washing been no changes to the size and elasticity. Absolute buy recommendation.