PRODUCT ANALYSIS · RUNNINGAREA EDITORIAL · 29 OCTOBER 2026
The useful detail in the Flame 4 ET specification is easy to miss: 361° names a glass-fibre plate. Keep the ET suffix when comparing listings, because the Flame name also appears on shoes with different construction. A familiar colour name is not enough to identify the shoe underneath it.
What the manufacturer identifies
361° describes the Flame 4 ET as combining a supercritical aliphatic-foam midsole with a three-dimensional curved glass-fibre plate, a fine twill-weave upper and a segmented RPU outsole. The Apex listing identifies model family 672612223; the Poizon listing uses that same family reference. These are the manufacturer’s component descriptions, rather than findings from a RunningArea teardown.
The plate is one part of this description. The published specification does not make the upper, outsole and foam interchangeable with those of another Flame model. When comparing two product pages, read each of those components separately instead of treating a shared series name as a complete specification.
How to read the plate claim
The brand positions the curved glass-fibre plate as giving a gentler propulsive experience than carbon plates. That is the brand’s description of its intended feel. The page does not identify a particular comparison shoe or provide a comparative test protocol, so it does not establish how this shoe will feel against every carbon-plated alternative.
Our reading is narrower: glass fibre is the material specified for this model’s plate. We have not measured its stiffness, tested its running economy or completed a training block in it. Describing the structure is useful; turning that description into a promised pace improvement would go beyond the evidence available here.
What the photographs can show
On our Flame 4 ET product page, compare the side profile with the outsole and heel views for your chosen colour. These views let you inspect the visible shape and surface layout. They do not expose the internal plate or measure the grip of the outsole.
The Poizon on-foot pictures add a view of the shoe being worn. They are catalogue photographs, not evidence that our editorial team ran in the shoe. We do not extend those photographs into a fit verdict for another runner, or into an on-foot view of a different colour.
Keep construction and sizing as separate checks
Once you have identified Flame 4 ET, use its linked manufacturer size chart to read the full label. Our selector retains the source catalogue’s EU options and displays the corresponding US Men, US Women, UK and Brand CM references. For EU 46, the manufacturer’s chart gives UK 11; we use that reference rather than the UK 10.5 conversion in the source listing.
Brand CM remains a chart label, not our measurement of the shoe’s interior. If you need help, send the exact EU option and your current shoe’s complete label through our contact page. See the size guide for the information to include.
For another example of why support structures need model-specific descriptions, our MEGA3 PRO nylon-support analysis follows the same approach: identify the component first, then keep performance claims within the available evidence.
Manufacturer sources checked 29 October 2026: Flame 4 ET Apex specification, Flame 4 ET Poizon model reference, and the directly linked 361° size chart. Editorial interpretation is identified above. No RunningArea wear-test results are claimed.