Should I Zip Up Jacket Before Washing?

When It Makes Sense

• Good fit: For lightweight, machine‑washable jackets made of polyester or nylon with a simple metal or plastic zipper, zipping the closure keeps the front panel together, reducing stress on the fabric and preventing the zipper teeth from catching on other items in the wash.
• Good fit: When the jacket includes a detachable hood or inner lining that could shift during the cycle, zipping the main closure secures the components, helping them stay aligned and avoiding uneven wear.

When You Should Avoid It

• Warning sign: If the jacket is labeled “hand wash only,” contains delicate embellishments, or has a waterproof/breathable membrane (e.g., Gore‑Tex), leaving the zipper open allows water and detergent to reach seams and seams more evenly, reducing the chance of water pooling inside the zipper housing.
• Warning sign: Jackets with heavy insulation, down filling, or bulky bulges can become misshapen if the zipper is zipped; the pressure may compress the filling and create uneven loft after the wash.

Pros and Cons

Pros

• Zipping secures the front panel, which can prevent the zipper teeth from snagging on other garments or the drum, protecting both the jacket and other items.
• It helps maintain the jacket’s shape during the spin cycle, especially for styles with a single front panel that otherwise might fold over.

Cons

• If the zipper is closed, detergent may be trapped inside the zipper tape, leading to residue buildup or corrosion over time.
• Closed zippers can restrict the flow of water and detergent, potentially leaving hidden areas less clean, especially on waterproof or insulated jackets.

Decision Checklist

• What does the care label say about washing method and zipper handling?
• Is the jacket made of a lightweight, machine‑washable material with a simple zipper?
• Will closing the zipper cause the jacket to compress or change its silhouette during the wash?

Alternatives to Consider

If you are unsure, you can zip the jacket partially (e.g., three‑quarters closed) to provide some protection while still allowing water to circulate. Another option is to place the jacket in a mesh laundry bag, which protects the zipper without requiring it to be closed. For very delicate or technical outerwear, hand washing or professional cleaning may be the safest route.

Final Recommendation

In most everyday cases—lightweight, machine‑washable jackets with standard zippers—zipping the jacket before washing is a reasonable choice that protects the closure and preserves shape. However, for jackets with waterproof membranes, heavy insulation, or delicate trims, leave the zipper open, use a laundry bag, or opt for hand washing. Always follow the manufacturer’s care label, and when the garment is high‑value or technically complex, consult the retailer or a professional cleaner before proceeding.