Shopify cart page won’t have description blurb in default. Below is how to add the description blurb on the cart page.
<div class="cart-item__product__description">{{ item.product.description }}</div>
Add the code to the main-cart-items.liquid file.
Shopify product page is not so friendly about exceeding the number of quantity in stock. The notification pops up, but users won’t know how much they can actually add more. 
<div class="quantity_available">{% if product.variants.first.inventory_management == "shopify" and product.variants.first.inventory_quantity > 0 %}
{{ product.variants.first.inventory_quantity }} items available in stock.
{% endif %}</div>
Add this code right above this code from main-product.liquid file.
{%- when 'popup' -%}
The “8 items available in stock.” is now displayed above the Add to cart button.