
Out the bottom. Sunday Proof has a base that zips off, so the sand you carried up the beach doesn’t come home with you. We’re starting production, and the first run is limited.

Flat seams and a stitched bottom mean sand collects in the corners and stays there. Shaking it out just moves it around.
Canvas soaks. A wet swimsuit at 2pm is a damp bag and a musty car by 6.
Keys, phone and sunscreen all in the same compartment, all coated in the same sand.

A rigid base panel on a full-perimeter zip, over a fixed mesh bottom that keeps your gear in while the sand falls through. 840D TPU-coated nylon with welded seams, a waterproof zip compartment inside, and an adjustable webbing strap.
One pull runs the base loose from the body.
Shake out all the sand, dirt, crumbs or liquid that may be at the bottom of the bag.
Welded seams, no stitching to wick. Sunscreen, jam, salt water. It wipes straight off.
Our team has spent a decade in manufacturing. We’re working with a bag supplier and our sample is with them now. The first run will be limited, and the list gets it first.
The list gets access before anyone else, in the order people joined.
$100. No surprise reveal at launch.
Vote on color and accessories. We ask the list before we lock in final details.
Free, and it commits you to nothing. We’ll email you when the first run opens and when we need your input, and that’s all.
Free to join. We will send production updates and when product is ready to ship.