An example of how a Venn diagram can be used to describe almost anything. One of our shirts for fans of Doctor Who.

Shirts are 100% cotton 4.5oz "softstyle", super comfortable. Men's shirts available in black or navy, sizes S-3X. Ladies shirts are "junior fitted" sized in black or navy, also sizes S-3X. Please note that 3X size take 1 extra week to produce.

Men's shirt sizes:
S: 36"
M: 40"
L: 44"
XL: 48"
2XL: 52"
3XL: 56"

Women's shirt sizes:
Please note: this is a fitted/stretchy shirt, these are the sizes of the shirts when un-stretched.
S: 32"
M: 34"
L: 36"
XL: 38"
2XL: 40"
3XL: 42"