Iris Bayer Showjumping Jacket

NWT Iris Bayer made showjumping show jacket. In perfect condition because it is literally new. I never wore it. It is amazing quality. It says size 68 but I’m unsure what that means. I’m 5’11 and slim and this jacket fits me almost perfectly. Measurements below. Back- Shoulder to Shoulder- 16 inches Waist- Approximately 28 inches Sleeve Length- 26.25 inches Shoulder to Hem- Approximately 25.5 inches