If you play a sport, a jock strap will help hold your gentials in place. Some believe that not wearing a jock can lead to injury. A protective cup is a plastc or metal shell designed to protect male genitals from injuries by impact. If you play any contact sports or engage in any activity where your genitals may get hit by something, you can protect them from injury by wearing a cup. Generally athletic supporters are available in boy's small, regular, and large, and men's small, medium, and large sizes.
Protective cups come in boy's and men's sizes.
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