Karate Groin Protector For children. Used only a handful of times during the 2nd grade year. Still in good condition. I've marked out my name in two places. The following is a quote: ⇩ The "Size 20" for groin protectors generally refers to the American sports equipment standard, indicating the size of the foul cup (protector) for youth/pee wee, with a cup depth of approximately 2 inches (about 5cm). I will do my best to ship it out the same day. Thank you.