Our Field Case is water-resistant and has some waterproof components.
Water-resistant is not the same as waterproof. Water-proofing is achieved by ultrasonically welding plastic panels together to create a watertight membrane - an extremely expensive undertaking that would likely triple or quadruple the price of our products if used. Water-resistance means that the item has a higher likelihood of keeping your possessions dry.
The Polyester shell covering the outer surface of our products is waterproof and the Toughtek covering high-wear areas is waterproof. The zips and stitching are water-resistant.
All these features work to greatly minimise moisture entering the internal compartments and damaging your belongings and art. However, the Field Case cannot be classified as waterproof strictly speaking.
Nevertheless, one of our customers took his Slate Mini out during a Tropical storm (same materials) and the results were amazing. The bag kept everything dry. Here’s a link if you’d like to watch his video: https://www.youtube.com/watch?v=QlFWcZ6m9gs