Bunker Underwear Parking Trunk Parking Trunk (with hidden straps for jock effect) 2'' nylon elastic with engineered stripes and frontal embroidery patch logo. Integrated 3/4'' plush lined rear straps inside (jock effect). Body hugging fit and rear straps lift and support for athletic comfort. Contour pouch boosts frontal profile. Bunker Parking trunk is made for the night, for the guy who want to impress.