Shop › Rub For Luck Underwear Image 1 of 1 Rub For Luck Underwear $13.00 100% cotton Gildan men’s underwear, covered waist band. Machine wash. Size: Select Size Small 28-30 Medium 32-34 Large 36-38 XLarge 40-42 Quantity: Add To Cart Added! 100% cotton Gildan men’s underwear, covered waist band. Machine wash.