PepsiCo has introduced an easier-to-pour 2-liter bottle for its North American drink products. The ergonomic improvements include distinct identity features.
For example, where the bottle now curves in on the Pepsi cola product, there are also embossed lines that echo the curves of the product’s globe logo. The lines on the new “waist” of the Mountain Dew bottle resemble mountains. The embedded lines also help customers keep a secure grip on what can be heavy and slippery bottles.
https://www.wsj.com/articles/pepsico-redesigns-the-two-liter-bottle-for-an-easier-pour-11605906958