The parcel reached the office of ukrpost in kiev for 16 days. According to measurements, for height-188, chest-108, waist-100, corresponded to 4xl, but the seller immediately advised to re-place the order for 5xl and was absolutely right! Fully corresponds-less-you can not, you can a little more. Thank you!
All very good, I underestimated the sizing as I am normally a Large in T-Shirt size and got 6XL. Fits in the top half but will need to have this adjusted around the waist and back (I have 33 -32 inch waist).
Recommend anyone of similar sizing to get 5XL for a sung fit.