Korean clothing sizes are completely confusing?

Korean sizing confused me for ages too. Free size means one-size-fits-all, and it is usually cut for a slim small-to-medium frame, so if you are larger than a typical Korean small or medium it often will not fit, especially fitted tops. For numeric sizes, women's tops and dresses often use 44, 55, 66, 77, where 44 is roughly an extra-small, 55 a small, 66 a medium, 77 a large, though it varies by brand. Some brands use 90, 95, 100, 105 in chest centimeters for tops, where 90 is about small and 95 medium. Women's pants are often shown in inches at the waist, like 26, 27, 28, or in 44, 55, 66. Men's tops use 90 to 110 in chest centimeters or small, medium, large, and shoe sizes are in millimeters, so a US men's 8 is about 260. Korean fits tend to run smaller and slimmer than Western, so sizing up one or two is common for foreigners. When buying online, ignore the label name and check the actual measurements the seller lists in centimeters for shoulder, chest, length, and waist, and compare against a garment you already own. That measurement-checking habit is the only reliable fix.