Boxer briefs :

These are similar in style to boxer shorts, but are generally shorter and form-fitting like briefs.
Jockstrap:

Consists of an elastic waistband with a support pouch for the genitalia and two elastic straps affixed to the base of the pouch and to the left and right sides of the waistband at the hip. In some varieties, the pouch may be fitted with a pocket to hold an impact-resistant cup to protect the genitals from injury.
Thong

Has a thin strip of material along the centre of the garment's rear which sits between the wearer's buttocks and connects the front or pouch to the waistband behind the wearer. Thongs are sometimes worn to reduce "panty lines" when wearing tightly-fitting trousers.
| | Trunks |

These are similar in style to boxer shorts, but are generally shorter and form-fitting like briefs.
Jockstrap:
| | Athletic supporter, jock, strap, supporter |

Consists of an elastic waistband with a support pouch for the genitalia and two elastic straps affixed to the base of the pouch and to the left and right sides of the waistband at the hip. In some varieties, the pouch may be fitted with a pocket to hold an impact-resistant cup to protect the genitals from injury.
Thong

Has a thin strip of material along the centre of the garment's rear which sits between the wearer's buttocks and connects the front or pouch to the waistband behind the wearer. Thongs are sometimes worn to reduce "panty lines" when wearing tightly-fitting trousers.
