"Ergonomic shape" refers to the design of something, particularly a tool or product, that is specifically created to be comfortable, efficient, and safe for its users. Full definition
The wide ergonomic shape provide comfortable and firm grip for the parent and enables older babies to easily grasp the bottle with their small hands. (babygearhub.net)
It's deep profile with ergonomic shaping is second to none. (idealhome.co.uk)
Moba baskets have ergonomic shaped handles with a soft grip for comfort and are strong and durable so they will never break. (mobausa.com)