Men’s jock briefs Men’s underwear made from rayon / spandex Machine wash Imported Go further while covering less in these sizzling men's jock briefs from the Gabriel Grey Collection, featuring an open back to show off your rear. With bold blocks of color in cool tones of grey and blue, the Gabriel Grey Colorblock jock briefs flaunt your form from front to back. A soft blend of rayon and spandex give the underwear its body-hugging fit. White seaming provides additional support while also enhancing the impact.