Lacrosse shin guards are required for all female goalies for youth and high school play and are also worn by many male youth players at younger ages. The Brine Cempas have a hard outer shell and strap on as one-size fits all. Great protection and comfort.  They are a lightweight hard plastic shell that offers maximum protection.  The foam liner provides protection and comfort while reducing weight.  Anatomically correct design form fits to your shins and ankles.