Borst

array(4) {
  ["s"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "s"
  }
  ["m"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "m"
  }
  ["l"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "l"
  }
  ["xl"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(2) "xl"
  }
}

array(4) {
  ["s"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "s"
  }
  ["m"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "m"
  }
  ["l"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "l"
  }
  ["xl"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(2) "xl"
  }
}

array(3) {
  ["s"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "s"
  }
  ["m"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "m"
  }
  ["l"]=>
  array(2) {
    ["in_stock"]=>
    bool(true)
    ["name"]=>
    string(1) "l"
  }
}