A needle and thread won’t help, because sewing through the fabric will poke holes in the waterproof coating. Send your coat back to the manufacturer to be mended, says Lindsey Stone of Rainy Pass Repair in Seattle; for a quick fix, try Gear Aid Tenacious Tape (rei.com)—it works on tents too.
How-to: Wipe the area clean and dry. Cut a piece of tape that overlaps the tear by at least 1 inch on all sides; adhere it to the garment. For extra strength, match the patch on the inside as well.
Martha Stewart Living, May 2014