SpareParts Pete Trunks Nylon Packing Underwear Black Size 3XLPack like a Pro, with the UnderWear that's got your back, your front and everything in between. Pete Trunks are short, square cut boxer briefs. Trunks are much like what would be referred to as in. boy shortsin. with the exception that Pete UnderWear has open fly access. Have your freedom and control all in one: Created exclusively for soft packing Works with a wide variety of packer brands, sizes and shapes Option to have the back of the packer