OGSO Swiss — Review

The OGSO Swiss is the Chamonix boutique's ultralight long-tour ski, sitting at the light end of their Ultra Tour Series with an 83-85 mm waist. Built around NEOTERIC camber with a long, high tip, it uses a paulownia wood core wrapped in a full carbon jacket with stabilizers and shock absorbers. Verified sidecut per length: 113-83-102 mm at 162 cm (17 m radius, 1150 g), 116-84-105 mm at 170 cm (18 m, 1225 g), 118-85-107 mm at 178 cm (19 m, 1300 g).

At 83-85 mm underfoot and weights of 1150-1300 g, the Swiss is designed for skiers who prioritize efficient uphill travel above all else — competitive weights for a light 85 mm tour ski. The NEOTERIC camber and long high tip promote a centered stance on skinning and reduce fatigue on multi-hour tours. On descent, the narrow 85 mm waist and cambered profile hold an edge on firm snow and steep couloirs but limit float in soft snow. This is a ski-mountaineering tool, not a freeride sled.

Core: paulownia wood with a full carbon jacket, plus stabilizers and shock absorbers targeting chatter on descent. NEOTERIC camber with 5 mm underfoot camber, long tip (190 mm tip length, 55 mm tip height) and shorter tail (80 mm). Sidecut varies per length (see above), radii from 17 to 19 m. Available lengths 162, 170, 178 cm. Manufactured at Kästle CZ.

Compared to the Dynafit Blacklight 88 the Swiss is similarly light and targets the same ultralight touring segment — the Dynafit is a mainstream reference; the OGSO is a boutique alternative with a NEOTERIC extended tip. Against the OGSO STS it is 10 mm narrower and lighter, with a more piste-friendly waist for firm-snow descents. Compared to the Dynafit Tigard 97, the Swiss is significantly narrower and lighter — a proper ski-mountaineering ski rather than a freeride tour.

Pros

• Verified per-length data across all three lengths (dimensions, radius, weight).
• Very light weights (1150-1300 g) at the ultralight end of the segment.
• NEOTERIC extended tip promotes centered stance on skinning and reduces fatigue.
• Narrow 85 mm waist grips well on firm snow and in steep couloirs.

Cons

• 85 mm waist limits float in soft snow versus wider tour skis.
• Ultralight construction lacks the damping of heavier tour skis in variable conditions.
• Three lengths (162, 170, 178 cm) — no options for very tall skiers.
• Premium boutique pricing versus mainstream ultralight tour skis.

Verdict: A boutique Chamonix-designed 85 mm ultralight long-tour ski for ambitious ski mountaineers who prioritize uphill efficiency. Best matched to steep couloirs and technical descents on firm snow rather than powder.