Columbia Sportswear Omni Shade Vented Short Sleeve Buttonup Shirt Top. Fishing, hiking, outdoor. Size XXL, approx. measurements: Armpit to Armpit: 23.5" Front Length: 26" Back Lenght: 28" Preowned, no flaws or defects New to Poshmark? Use my code WhoaSandee when you sign up to get $10 off your first purchase.