white black coffee green light gray dark gray iron gray 3 pairs combination a [2 black and 1 white]] 3 pairs combination b [1 dark gray 1 light gray 1 iron gray]] 3 pairs combination c [1 coffee 1 green 1 dark gray]] 5 pairs combination a [3 black 2 white]] 5 pairs combination b [1 black 1 white 1 dark gray 1 iron gray 1 light gray]] 5 pairs combination c [1 dark gray 1 iron gray 1 light gray 1 green 1 coffee]] 5 pairs portfolio d [2 dark gray 2 light gray 1 iron gray]] 5 pairs combination e [2 coffee 2 green 1 dark gray]] 10 pairs combination a [5 black 5 white]] 10 pairs combination b [2 black 2 white 2 dark gray 2 iron gray 2 light gray]] 10 pairs combination c [2 dark gray 2 iron gray 2 light gray 2 green 2 coffee]] 10 pairs of portfolio d [4 dark gray 4 light gray 2 iron gray]] 10 pairs combination e [4 coffee 4 green 2 dark gray]]

simple package-1 generation cost performance [aluminium buckle fixed per pair]] hardcover-1 generation cost performance [sock card + independent packaging bag]] simple package-2 generation high quality [aluminium buckle fixed for each pair]] hardcover-2 generation high quality [sock card + independent packaging] can be hung in physical stores