Try adjusting first: The Scorza Performance Vest features an adjustable velcro strap system designed to fit chest sizes from 86cm to 121cm (34" to 48"). Try adjusting the side straps for a better fit.
If adjustment doesn't work: You can return your vest within 30 days of purchase for a different size.
How to exchange: Email contact@scorza.com with your order number in the subject line and mention you need a size exchange.
See our help article here for the Exchange process.