On Cloudsurfer (CloudTec Phase) Sz M10 Sage/Coral 'FVO PK' Heavy Used

On Running Cloudsurfer (2023 CloudTec Phase) — Sage / Mint / Coral (FVO PK)

Serial: 3MD10421071 | Released March 23, 2023 | Original Retail approx $180 USD (€169.95)

Size: US Men's 10 (UK 9.5 / EU 44 / JP 28)

Swiss engineering that shook the running world. On (founded 2010 in Zürich, with tennis legend Roger Federer as a major investor and brand ambassador) has become one of the fastest-growing premium athletic brands globally. The 2023 Cloudsurfer specifically introduced their revolutionary CloudTec Phase technology — the pod-shaped elements you see running along both side profiles and across the outsole are made from Helion super foam. They collapse domino-style on impact and interlock to create a smooth rolling stride transition. On used Finite Element Analysis software to optimize each pod's stress distribution.

Design details: Sage/mint mesh upper with cloud-shaped perforations for breathability, coral orange accent tabs at each lace loop, silver reflective 'On' logo on both quarters, mint padded collar and heel counter, cream Helion super foam midsole with the signature CloudTec pod cutouts, cream and coral CloudTec Phase outsole with 'CLOUDTECPHASE' branding. Uses On's dope-dyeing process for the upper (90% water savings vs conventional dyeing).

Specs: 31mm heel / 21mm forefoot stack height, 10mm drop, 8.3oz (US 9), designed for daily training miles.

Condition: Heavy Used. This pair has logged real running miles. Sage mesh upper shows meaningful dust/grime with perforations packed with dirt. CloudTec pods along the side profile show heavy cream discoloration/aging. Coral CloudTec Phase outsole shows real wear — the grey central channel between orange sections has visible discoloration from repeated foot strikes. Reflective 'On' logo shows some fade. Interior sage lining shows dust. 'CLOUDSURFER' tongue tags intact and readable. Structure fully solid — no rips, no delamination, cushioning still functional. Priced honestly to reflect the mileage. No box.