Outdoor kit is very robust, but does from time to time get damaged. If it is a soft fabric item, such as fleece or next to skin items, then you can stitch in the same way as you would any item of clothing. If it is a waterproof jacket, or a down jacket, then outdoor repair tape is probably the best option. There are several options out there, Tenacious tape or Spinnaker tape are good options to consider. These tapes will allow you to create a durable waterproof repair that can be washed without damaging your jacket. If you would like a more permanent repair, there are a couple of UK based repair companies that are very good at working with waterproof fabrics. We would recommend either Lancashire Sport Repair or Scottish Mountain Gear.
Ask the Expert with Marmot