This 100% cotton and oilskin treated gearpiece makes a wonderful waterproof seat mat, a cloth you can eat or work on; you can even tie it to the top of your non-waterproof backpack or anything in general, as it is made from sturdy 6oz waxed cotton canvas. This is an ideal tool to take along on your next hiking adventure or camping trip! Theyre convenient and light, it means that it will be there when you need it most: whether for sitting upon in campgrounds after cooking over a fire pit; kneeling down while walking through wet brushwood with kindling and tinder boxes clutched within our hands; resting atop moist logs during those long hours searching for something unusual among these proud treesand more importantly than any of this. These things are handmade by someone who knows how much abuse theyll take before falling apart without weighing a ton!  Dimensions Small: 42 x 42 cm (16.5 x 16.5 inches) Big: 68 x 68 cm (27 x 27 inches) Weight Small: 100g  Big: 200g