Our vests are patterned in the riding position, with a tighter fit across the chest and an arm opening with a more forward position. This is intentional to reduce flapping and extra fabric across the chest while riding. When standing, the vest will feel tight across the chest and torso. The intended fit is tailored without extra fabric to flap around - it should fit tight over your jersey (with enough room for a long sleeve and base layer), but shouldn’t appear baggy. We select fabrics that have some elasticity to allow for freedom of movement even with a tailored fit to accommodate some range of fit within each size.