Clothing size larger than 3XL.
DXL OR KING SIZE they both have websites you can order from.
4XL, 5XL, 6XL, 7XL, 8XL, 9XL, 10XL…
If you are looking for online orders, this one is OK:
I have the problem of a 3xl fits but the sleeves, arms are too tight and too short! Nobody makes clothes for Sasquatches!
Bespoke clothing is available, but spendy when compared to off the rack.
Use KINGSIZE quite a bit. Pretty much all I have purchased has been true to size. Did happen to find another place called Five Brothers, got some nice heavy flannels that I’ve purchased.
I have bought from both DXL and King Size and their both good places to check out.