/ / Engineering

Acidwork is a firmness experiment we decided to sell. The PEBA is foamed to the same density as Nullform and then compressed 4mm during moulding, which raises the Asker C hardness from 48 to 56 and cuts ground-contact time by about 9 milliseconds at threshold pace. That is a real gain and it costs you the cushioning at anything slower — below about 5:00/km this shoe is worse than the one it is based on, and we would rather say so than let you find out at 20km. The cage is welded TPU rather than stitched overlay, applied at 0.4mm so it restrains the midfoot without adding a seam that can rub.

/ / Specification

Midsole

Compressed supercritical PEBA, 56 Asker C

Plate

1.1mm carbon-PA full length

Upper

Engineered knit with welded TPU cage

Outsole

In-house tooled rubber, 2.2mm

Intended pace

Sub 5:00/km — firmer than Nullform

Lacing

Flat 130cm, 7 eyelet

Mass / stack / drop

224g · 34mm · 8mm