Luckily I have previously read other recessions. The bathrobe definitely is one size larger than you normally wears. I have 1.84 m, and bring it to a fighting weight of 92 kg. Size "L" is with me for this bathrobe more than enough - the sleeves are date back to the palms and around the hips, he is a generous size. I believe in size "XL" would be similar to a potato sack.
Nevertheless - with proper size selection - a top spa and sauna coat that I wear a lot.