EcoFlow DELTA Pro Bag. The EcoFlow DELTA Pro Bag maintains the DELTA Pro’s ease of use while protecting it from water, debris and damage while on the move.. Highlights. 1. Made from lightweight, waterproof, and wear-resistant material that protects DELTA Pro from weathering or on-the-go knocks and scrapes.. 2. Designed to protect while ensuring access to all power outlets, wheels, and the handle. A transparent cover for the LCD screen lets you easily monitor DELTA Pro while protecting the display from scratches.. In the BoxEcoFlow DELTA Pro Bag. This bag is applicable for all regions and not restricted to the types of its outlets.