kabaca şöyle bişey yaptım üzerinde düzenleme yaparsın.

<div class="product col-sm-6 col-xs-6">
  <input type="radio" name="Siparis" value="1025" id="2" checked="checked" />
  <img src="https://i.hizliresim.com/fzf5lyf.jpg" alt="Image" class="product-image" /> 
  <div class="wrapper">
    <div class="wrapper-txt">Seçiniz</div>
  </div>
  <input type="radio" name="product_id[]" value="1025">
  <input type="radio" name="custom_options_default[1]" id="not2" class="color" value="CİNSİYET ve BEDEN bilgisi istemeyi UNUTMAYIN..!" />
</div>

*{
  margin: 0px;
  padding: 0px;
}
.product {
  display:flex;
  position: relative;
  width: 401px;
  height: 726px;
}

.product img ,.product .wrapper{
  margin: 0px auto;
  padding: 0px;
}

.product.selected .wrapper {
  content: '';
  border: 3px solid #c0bd18;
}
.product.selected .wrapper-txt{
  background: #c0bd18;
}
.wrapper {
  width: calc(100% - 40px);
  height: calc(100% - 64px);
  position: absolute;
  top: calc(50% - 8px);
  left: 50%;
  display:flex;
  flex-direction:column;
  border: 3px solid black;
  transform: translate(-50%, -50%);
}
.wrapper .wrapper-txt{
  font-size: 3em;
  background: black;
  min-width: calc(100% - 40px);
  height: 67px;
  color: white;
  left: 50%;
  transform: translateX(-50%);
  cursor: pointer;
  position: absolute;
  bottom: -25px;
  text-align: center;
  z-index: 2;
}
.product [type=radio] {
  position: absolute;
  opacity: 0;
}

$('[name="custom_options_default[1]"]:eq()').attr("checked", true);
$(".product").click(function() {
  if (!$(".custom-option", $(this)).length) {
    $(this).addClass("selected");
    $(this).find(".wrapper-txt").text("Seçildi ✓");
  }
  var $siblings = $(this).siblings(".product");
  $siblings.find(".custom-option").val("");
  $(this).parents(".checkout-form").find("[name='product_id[]']").attr("checked", false);
  $(this).parents(".checkout-form").find("[name='urun']").attr("checked", false);
  $(this).find("[name='product_id[]']").attr("checked", true);
  $(this).find("[name='urun']").attr("checked", true);
  console.log("submit");
  $(".smart-checkout-form222").submit();
});