Kaohi INVIZ + Coil Cover Parawing Calf Leash-3.5'+30" x 7mm

The Kaohi INVIZ + Coil Cover Parawing Calf Leash is a hybrid foil leash built specifically for parawing foiling, combining a polyurethane coil section with a UHMWPE (Dyneema-style) bungee cord. Kaohi, a brand known for its patent-pending leash designs developed with input from professional foilers, created the INVIZ line to deliver a lightweight, low-profile tether that minimizes drag and noise during foiling sessions. The Coil Cover variant adds a high-stretch lycra sleeve over the coil section, preventing parawing bridle lines from snagging on the leash during use — a common frustration with standard coil leashes in parawing setups.

The leash threads directly through the board's leash plug rather than using a traditional rail saver, keeping the attachment point streamlined and reducing bulk near the tail. This calf-cuff version positions the leash higher on the leg than an ankle attachment, which helps keep the cord clear of the foil and water surface while riding.

• Coil length: 3.5 ft polyurethane (coiled)
• Bungee length: 30 in UHMWPE
• Coil diameter: 7 mm
• Unstretched length: ~42 in
• Total stretch: 6+ ft
• Weight: 4.5–7 oz (varies by connection style)
• Coil Cover material: High-stretch lycra/spandex sleeve
• Attachment: Calf cuff
• Patent status: US Patent Pending

This leash targets intermediate to advanced foilers who ride parawings and need a tangle-resistant connection to their board. The coil cover sleeve solves a specific problem — bridle lines catching on exposed coils — so it is most relevant to riders actively using parawing setups rather than traditional wing foiling or prone foil surfing. The lightweight hybrid construction, roughly 30% lighter than a comparable all-TPU leash, suits riders who prioritize a minimal feel and reduced water slap during sessions.

Kaohi notes that the INVIZ line is not intended for heavy conditions. Riders heading out in strong wind or large surf should consider a heavier-duty coil or continuous leash design. For light to moderate parawing sessions, however, the thin profile and quiet performance make it well suited to the task.

Within Kaohi's catalog, the INVIZ + Coil Cover Parawing Calf Leash sits alongside several other INVIZ variants. The same leash is available with a carabiner clip or UHMWPE loop attachment instead of the calf cuff, giving riders flexibility in how they connect to a harness or board. For riders who do not need the anti-tangle sleeve, the standard INVIZ leash (without the Coil Cover) is available at a lower price point. Kaohi also produces the Double Coil leash line, which uses a dual-coil polyurethane design in 5.5 mm or 8 mm diameters for riders who prefer a more traditional all-coil setup with added kink resistance.

Compared to generic coil foil leashes from brands like Dakine or Ocean & Earth, the INVIZ occupies a niche position: it trades some of the raw strength of a thick single-material leash for a lighter, hybrid construction purpose-built for foiling disciplines where drag and tangle resistance matter most.