All product packaging methods are displayed on the product details page. Simply select the product you're interested in and scroll down to find the "Shipping" section, where you'll see the packaging method for that product.
P.S.
Generally, the packaging shown on the left is the innermost layer, while the packaging on the right is the outermost layer. The product packaging you see will all be applied to that product rather than applied individually.
The product packaging is determined by the shipping department. There may be instances where the shipping department updates the packaging, but the website has not yet been updated to reflect those changes.