alexmixaylov,
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title> - jsFiddle demo</title>
<script type='text/javascript' src='http://code.jquery.com/jquery-1.9.1.js'></script>
<script>
$(function () {
var obj = { set10 : ["lbl-275", "lbl-259", "lbl-286"],
set11 : ["lbl-275", "lbl-259"],
set12 : ["lbl-259"]};
$('.label-hide label').hide();
$('#vid-product').on('change', function () {
$('.label-hide label').hide();
var numberSet = $('#vid-product').val();
var nameSet = ("set") + numberSet;
nameSet = '.' + obj[nameSet].join(', .')
$(nameSet, ".label-hide").show();
});
});
</script>
</head>
<body>
<select id="vid-product">
<option selected="selected">Выберите</option>
<option value="10" class="10">Первый набор</option>
<option value="11" class="11">Второй набор</option>
<option value="12" class="12">Третий</option>
</select>
<div class="label-hide">
<label class="lbl-275">
<input value="275" type="checkbox" class="value-275" />первый</label>
<label class="lbl-259">
<input value="259" type="checkbox" class="value-259" />второй</label>
<label class="lbl-286">
<input value="286" type="checkbox" class="value-286" />третий</label>
</div>
</body>
</html>