Invalid product card 2 (has no description)

invalid_productcard2.json

{
  "pair_version": "0.3.1",
  "card_type": "product",
  "web_url": "http://www.examplestore.com/listing/36226783/green-leather-shoes",
  "offers": [
    {
      "price": {
        "price": 7.99,
        "currency": "USD"
      },
      "original_price": {
        "price": 17.99,
        "currency": "USD"
      },
      "shipping_cost": {
        "price": 1.5,
        "currency": "USD"
      },
      "availability": "InStock",
      "quantity": 15,
      "sale_start_date": "2014-06-01T00:00:00.000+0000",
      "sale_end_date": "2014-06-24T00:00:00.000+0000",
      "expiration_date": "2014-07-13T00:00:00.000+0000",
      "geographic_availability": [
        "US"
      ],
      "weight": 17.0,
      "weight_units": "oz"
    }
  ],
  "product": {
    "name": "Green leather shoes",
    "merchant": "Example Store",
    "brand": "Shoemaster",
    "colors": [
      {
        "display_name": "Mint",
        "swatch_url": "http://www.examplestore.com/swatches/mint.jpg",
        "value": "RGB(62, 180, 137)",
        "mapping_color": "green"
      }
    ],
    "images": [
      "http://img.examplestore.com/02/wer4554/il_5d9184_iqm9.jpg",
      "http://img.examplestore.com/017/fgh/il_57w9.jpg",
      "https://img.examplestore.com/020rjt/24554/il_570d14_3us0.jpg",
      "https://img.examplestore.com/0166f54/il_570xg90_87gc.jpg"
    ],
    "rating": 8.0,
    "rating_scale": 10.0,
    "rating_count": 12,
    "related_items": [
      "http://www.examplestore.com/listing/36226783/green-leather-shoes",
      "http://www.examplestore.com/listing/16362355/maroon-checkered-shoes",
      "http://www.examplestore.com/listing/13245522/pink-nylon-shoes"
    ],
    "referenced_items": [
      "http://www.examplestore.com/listing/45637734/blue-leather-shoes",
      "http://www.examplestore.com/listing/88833589/yellow-leather-shoes"
    ],
    "sizes": {
      "md": "Medium"
    },
    "options": [
      "example option a",
      "example option b",
      "example option c"
    ],
    "model": "KICKN-GRL-17",
    "gender": "unisex",
    "app_link_ios": "jump://VerticalA/x123",
    "app_link_android": "market://search?q=pub:examplestore"
  }
}