For anyone who is thinking of trying a unisex or men's jersey, the rule of thumb is that the size needed for most makers is one size larger than what you wear in a unisex tee-shirt. If you wear a size large in a unisex tee, then you need to buy the jersey in an extra-large. The exceptions, at least for me, are the makers Canari and Free Spirit are the same size as the unisex tee, so essentially one size smaller than the other makers.