Haku Mt. Supply Gunjō Denim Fire-resistant Waterproof Tarp

The strength of a square tarp lies in its flexibility. With the right setup, it can shift from a ceiling to a shelter to a tent—covering everything from family sites to solo camps with a single piece of gear.

The Gunjō Tarp takes cues from the DD Tarp, a pioneer of modular tarp design, and reinterprets it through Haku’s own perspective. Using ten tape loops and nine grommets for a total of nineteen connection points, it invites experimentation in how it’s pitched and lived under. Whether raised high and open or folded low into a closed form, it balances structure with creativity—each setup shaped by the camper’s own approach to the outdoors.

Gunjō’s discharge-dyeing method reverses the usual approach to color. Rather than adding pigment, the technique removes it, lifting indigo from the fabric to reveal soft contrasts that look embedded rather than printed. The process leaves traces of blue behind—evidence of the original dye—creating patterns that feel naturally integrated into the cloth.

During production, the method was refined to preserve the irregular textures first achieved by hand. By adjusting the glue thickness in the silk-screen and controlling pressure with a spatula, each print takes on subtle variations in tone and edge. No two fabrics are identical; every piece carries its own impression of the craft that shaped it.

The “Titanium Blue Cloth” is a plain-weave tent fabric using indigo-dyed cotton for the warp and nylon filament for the weft. This blend balances strength, weight, and flame resistance—qualities that neither fiber can achieve alone.

Cotton provides the natural texture and ability to hold indigo dye, while nylon reinforces the weave for durability. The result is a fabric strong enough for a tarp yet visually distinct from denim, with the indigo color deepened through rope-dyed warp threads woven against black nylon weft.

Woven slowly on a Jacquard loom—a rare setup for indigo work—the material carries the subtle irregularities and depth unique to this process. Its name draws from titanium, which shifts from blue to violet when heated, echoing the same evolving hues of indigo itself.