What is waxing and fluorocarbon ban in Cross-Country Skiing?

Section 2: Equipment

Classic skis: Minimum length = competitor’s height minus 20 cm. Maximum width 48 mm (1.89 in). Feature a “wax pocket” or “kick zone” under the foot for grip wax or mechanical grip patterns (fish scales, skin inserts). Relatively soft flex to engage the kick zone underfoot.
Skating skis: Minimum length = competitor’s height minus 10 cm. No maximum width restriction. Full glide base (no kick zone). Stiffer camber than classic skis for edge-to-edge stability during skating pushoff.
Ski base material: Sintered polyethylene (P-Tex), stone-ground for optimal glide structure matching snow conditions
Binding system: Must be FIS-approved. Common systems: NNN (New Nordic Norm), SNS (Salomon Nordic System), Turnamic, Prolink

Classic: Maximum pole length = 83% of body height (measured with the athlete standing in ski boots on a flat surface)
Skating: Maximum pole length = 100% of body height
Pole baskets must not exceed 100 cm² (15.5 in²) in area
Carbon fiber or composite construction standard at elite level; aluminum for entry-level
Pole straps must be detachable under load for safety (prevents wrist injury in falls)

Classic boots: Low-cut, flexible sole for ankle articulation during diagonal stride
Skating boots: High-cuff design with ankle support for lateral stability during skating push
Must be commercially available models (no custom prototypes at World Cup level without prior FIS approval)
Race suit: One-piece or two-piece lycra suit. No aerodynamic aids, fairings, or modifications. Bib number worn over suit.
Gloves, hat/headband, and sunglasses/goggles as conditions require

Kick wax (classic only): Applied to the grip zone; must be matched to snow temperature and humidity. Harder waxes for cold/dry, softer waxes (klisters) for warm/wet conditions.
Glide wax: Applied to tips and tails (classic) or full base (skating). Ironed into the base structure for maximum speed.
Fluorocarbon ban (Article 343.10, ICR): Since the 2023–2024 season, all fluorinated wax products (including powder overlays and blocks) are prohibited. Spot checks are conducted using portable X-ray fluorescence (XRF) spectrometers. Detection of fluorine above the threshold results in DSQ and equipment confiscation.
Teams employ dedicated wax technicians who prepare 8–15 pairs of skis per athlete for testing on race day

Classic skis: Minimum length = competitor’s height minus 20 cm. Maximum width 48 mm (1.89 in). Feature a “wax pocket” or “kick zone” under the foot for grip wax or mechanical grip patterns (fish scales, skin inserts). Relatively soft flex to engage the kick zone underfoot.
Skating skis: Minimum length = competitor’s height minus 10 cm. No maximum width restriction. Full glide base (no kick zone). Stiffer camber than classic skis for edge-to-edge stability during skating pushoff.
Ski base material: Sintered polyethylene (P-Tex), stone-ground for optimal glide structure matching snow conditions
Binding system: Must be FIS-approved. Common systems: NNN (New Nordic Norm), SNS (Salomon Nordic System), Turnamic, Prolink

Classic: Maximum pole length = 83% of body height (measured with the athlete standing in ski boots on a flat surface)
Skating: Maximum pole length = 100% of body height
Pole baskets must not exceed 100 cm² (15.5 in²) in area
Carbon fiber or composite construction standard at elite level; aluminum for entry-level
Pole straps must be detachable under load for safety (prevents wrist injury in falls)

Classic boots: Low-cut, flexible sole for ankle articulation during diagonal stride
Skating boots: High-cuff design with ankle support for lateral stability during skating push
Must be commercially available models (no custom prototypes at World Cup level without prior FIS approval)
Race suit: One-piece or two-piece lycra suit. No aerodynamic aids, fairings, or modifications. Bib number worn over suit.
Gloves, hat/headband, and sunglasses/goggles as conditions require

Kick wax (classic only): Applied to the grip zone; must be matched to snow temperature and humidity. Harder waxes for cold/dry, softer waxes (klisters) for warm/wet conditions.
Glide wax: Applied to tips and tails (classic) or full base (skating). Ironed into the base structure for maximum speed.
Fluorocarbon ban (Article 343.10, ICR): Since the 2023–2024 season, all fluorinated wax products (including powder overlays and blocks) are prohibited. Spot checks are conducted using portable X-ray fluorescence (XRF) spectrometers. Detection of fluorine above the threshold results in DSQ and equipment confiscation.
Teams employ dedicated wax technicians who prepare 8–15 pairs of skis per athlete for testing on race day