No, the jerseyguard was designed as a "one size" product in a way that you can use for Trikot sizes M-XXL.
As a rule, it is the case that the sizes M and L are streamlined by the insertion aid (folding carton) lying in the jersey in such a way that it is no longer necessary to "correct" much. It can be that with small jerseys a part of the folding box at the bottom of the waistband is visible. Due to the color choice between black and white insertion aid (depending on the tricot color-both are included in the scope of delivery), however, this is not further disruptive. Big jerseys (XL/XXL) are "small folded" (see explanatory images). In principle, each jersey can be reduced by a few folding techniques to the size of the inserting carton.