Tread Lite Gear Dyneema Composite Fabric toilet kit Dry Bag. Made from 1.43oz dyneema Composite (also known as cuben fiber). Polyamide closure and stiffeners. fully tape seam sealed. Pretty much impervious to moisture bit not immersion proof. 3D base designed to accept either compostable baby wipes or Mk1 bog Roll . 

16cm wide x 24cm tall when flat and unrolled. Weight 14.4g.