These patches make it simple to repair your sil nylon gear. Made of strong ripstop nylon with silicone-based adhesive you simply cut to size and shape desired, peel, and apply with pressure. Washable and weatherproof, they are suitable for tents, tarps, backpacks, hammocks, dry sacks, sleeping pads and bags, and stuff sacks. Kit includes two 3 x 5" patches sheer enough to match just about any fabric colour.