Kaohi Double Coil Ankle Leash-Black-6' x 8mm

The Kaohi Double Coil Ankle Leash (6' x 8mm) is a heavy-duty foil leash designed for riders who need reliable board retention in demanding conditions. Kaohi — a Hawaii-rooted brand whose name translates to "control" — builds leashes specifically for foiling disciplines, and the 8mm Double Coil sits at the burlier end of their lineup. The leash uses a patented double-coil configuration (patent pending) that wraps in two parallel spirals rather than a single helix, which helps the cord stay above the waterline and resist the kinking and tangling that plague conventional coil leashes.

A distinguishing detail is the patented Grip handle (US Patent 10,737,750 B2), a neoprene-covered rail-saver integrated into the leash. The handle is shaped to stay open and easy to grab, letting a rider keep the board close with one hand while the other hand remains free for a paddle or wing. Kaohi notes the handle is also useful for pulling a board onto a jet-ski sled or dock. The brand advises against gripping the handle during wave impacts — in those situations, the leash itself should absorb the load.

• Length: 6 ft
• Cord diameter: 8 mm
• Cuff type: Ankle (2.0" soft neoprene)
• Swivels: 316 marine-grade stainless steel, double swivel
• Closure: Pro-Grip hook-and-loop
• Color: Black
• Patent: US 10,737,750 B2 (Grip handle); Double Coil patent pending
• Available lengths: 6 ft, 7 ft
• Available cuff options: Ankle or calf

The 8mm Double Coil targets intermediate-to-advanced foilers who ride in stronger winds, bigger swells, or open-ocean downwind runs where a thinner leash might not inspire confidence. At 8mm, the cord is noticeably thicker than Kaohi's 5.5mm variant, trading a small amount of compactness for greater breaking strength and durability under load. It suits prone foiling, wing foiling, SUP foiling, and downwind paddling — essentially any foil discipline where the rider wants a robust tether that stays out of the water and won't wrap around a mast or fuselage.

Because it attaches at the ankle rather than the calf, this version works well for riders who prefer a lower attachment point for quick kicking clearance. Riders in calmer or lighter-wind sessions, or those on smaller boards prioritizing minimal drag, may prefer the 5.5mm model instead.

Kaohi's Double Coil leash range spans three cord thicknesses — 5.5mm, 7mm, and 8mm — each offered in 6-foot and 7-foot lengths with ankle or calf cuff options. The 8mm is the thickest and most heavy-duty option in the line, positioned for rougher conditions and larger boards, while the 5.5mm is aimed at prone foilers on compact craft who want the lightest possible setup. All three share the same patented Grip handle and double-coil architecture.

In the broader foil-leash market, the Kaohi competes with coil leashes from Dakine, FCS, and Creatures of Leisure, but few competitors offer the integrated rail-saver grip handle or the double-coil tangle-reduction design. Riders choosing between Kaohi sizes should match cord thickness to the intensity of their sessions: 5.5mm for light-duty prone work, 7mm as an all-rounder, and 8mm for high-load scenarios.