FILA Outdoor M’s Switchback Synthetic (1998) – Blue/Yellow | Deadstock | Size 11 US | Style #11104012-474

In the late ’90s, FILA Outdoor redefined trail performance with the Switchback Synthetic—a lightweight, seamless runner engineered for SkyMarathon athletes and competitive trail racers. Designed in Boulder, CO and produced with precision, it anticipated innovations that the rest of the industry wouldn’t catch up to for years.

Specs & Innovation:

Seamless synthetic upper w/ computer-guided stitch lines → breathable, quick-drying, ultralight

Racing last shape for precision fit + speed

Scrim forefoot protection embedded in rubber for durability

Proprietary EVA midsole compound bonded to lightweight fabrics

New outsole design: streamlined lug depth, reduced rubber thickness without losing traction

Under 11 oz (size 9 equivalent) → race-day fast, trail-ready tough

Provenance & Pedigree:

Conceived by Steve McDonald (ex-Nike ACG creative) for the Boulder FILA USA team

Competitive set: Nike Terra Albis, Nike Terra Fire, Asics Gel-Lytes, Adidas Terrain II

Introduced 1996, refined through ’97–’99—this pair represents the 1998 update

Deadstock (DS/DC): unworn, carefully stored, climate-controlled

Size US 11 / Euro 44 – Style #11104012-474

Not available on secondary markets—archive rarity

This is lightweight innovation decades ahead of its time. The Switchback was built for speed on single track and the sky marathon circuit, proving FILA Outdoor was at the front edge of performance design.

🔥 A rare archival find. Serious inquiries only.