Dark Grey Heavy Duty #5 Invisible Continuous Zipper Tape

This rich dark grey shade is a versatile neutral that works beautifully with modern dressmaking, tailoring, soft furnishings and craft projects. Ideal when you want a concealed fastening that blends seamlessly with charcoal, slate, monochrome palettes or patterned fabrics.

Each metre includes two matching sliders, allowing you to create a custom-length invisible zip with a smooth, clean finish. The Size 5 design features a robust 5 mm coil, offering greater strength and durability than a standard Size 3 invisible zip — perfect for structured garments and thicker materials.

Perfect for:

• Dresses, skirts and tailored garments

• Cushions and contemporary home décor

• Bags, craft projects and accessories

• Light upholstery

• Any project needing a stronger invisible zip

All orders are cut as a continuous length from one reel.

Size 5 (or #5) refers to the coil width of 5 mm. This is stronger and more robust than a standard Size 3 invisible zip, making it suitable for bridal wear, costumes, cushions and upholstery projects where extra durability is needed.

Each metre includes two colour-matched sliders. Slide the tape into the channels and pull gently to secure.

Our video tutorial below shows the method on Size 3 tape — the technique is identical for Size 5