A: Yes, it's the same thing. ON amazon you can find all kinds of wonderful substitutions. 3X, 3XL, XXX-Large and probably some more creative representations too.
plus-sizes XL - 4XL+
If you look for waist measurements with your sizing (as is often the case in "menswear") here's how how we categorize those sizes: XL (44 & under), 2XL (46-48), 3XL (50-52), 4XL (54-56), 5XL (58-60), 6XL (62-64).
A: It is the same size. Some sellers/vendors may have it as 3xl or 3x-plus.
A: 3x big is for thicker/wider people.
1X is larger then XL. This is because L, XL, XXL are all in misses/womens sizing. 1X, 2X, 3X are all in women's PLUS sized sizing. So in this case 1X or 2X (being PLUS size garments for heavier set women) are going to be larger then an XL, XXL in regular misses sizes.
A: No. XXL is Misses, 42 I believe. 2X is Plus size, 44.
If you are looking for something larger, you should move onto the plus-size category where 2XL, 3XL, and larger plus-sized clothing is. If you are used to still wearing only XL clothing, you can safely move to XXL as this is just the next step to the sizing that you are growing into.
Please try again. A: 3xB means size 3x and B means big, which means the clothing items with B are made a little bigger than the regular big sizes.