Sleeping bags are available in featherloft, hollofil and mixed filling to provide warmth to campers in freezing temperatures. The bag features a two-way nylon zip that is encased with a draft tube to prevent air from flowing in between the zip teeth. Occasionally a zip can wear out or become damaged from age, improper care or conditions on the camping trip. The zip can be repaired while camping with a few supplies or significant repairs can be made at home between camping trips.
Rub a #2 pencil along the zip if it is worn out. The graphite from the pencil lead will smooth over any rough spots that keep the zip from gripping properly.
Lubricate the zip with a lightweight, non-greasy lubricant for a zip that doesn’t slide very well. One common lubricant is softened candle wax.
Replace the slider on the zip by removing the seams that hold the bottom edge of the zipper to the bag. Remove any metal stops at the base of the zip using pliers. Use a seam ripper carefully to break each stitch individually, and then pull the loose threads out. Remove the old zip foot by unzipping until it falls off. Install a new one by zipping it on. Stitch the zip edges back into the sleeping bag, tying the thread at each end to secure.
Replace a damaged zip by first using a seam ripper to remove the existing zip. Be cautious not to damage the bag itself. Alternatively, cut the old zip off along the webbing, close to the seam, being careful not to cut the bag. Pin the new zip in place and sew using a needle and thread or sewing machine. It is recommended to use the same stitch holes from the old zip if possible.