Star Kickboxing,karate WTF Taekwondo Female Groin Guard Female Groin(Vinyl) Guards KickBoxing Taekwondo martial arts sparring gear Size XS for kids under 5 yrd, Size S for kids 6~10 yrd Size M for waistline 27~30" Size L for waistline 30~32" Size XL for waistline 33~35"