YITH WooCommerce Quick View Premium : Among the many products available in a shop, going back to the one you prefer often becomes an annoying activity because it always takes too long to find it again. Being able to open a pop-up window where to see details concerning that product makes users’ task easier.
And an Add to cart button is there available.

YITH WooCommerce Quick View Premium

The possibility to see immediately product details and magnified images of them makes users feel more comfortable with the website they are browsing and makes them also more willing to buy. In fact, clicks before adding the product to the cart are reduced as well as server load.