HL-0921
Race layer
Series 01
Halo Racer
A carbon-plated racer with a 39 mm stack and a rocker that starts rolling before you push. Built for the last ten kilometres.
Weight
188 g
Drop
6 mm
Rated
42.2 km
Tokyo · 35.6762° N
Build HL-0921
Release 11 / 26
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Halcyn builds footwear on the border between shoe and measuring tool.
Every pair records nothing and proves everything: the foam, the plate and the upper are tuned against data we collected over 1,200 night kilometres. Run System 01 is for people who run when the city is empty.
System
Run System 01
Models
04
Release
11 / 26
Status
Live
Run System 01 — Night Line
Four models, one platform. Each pair is issued with its own build number and a measured specification — nothing on it is decoration.
HL-0934
Daily layer
Series 01
Vector Trainer
The everyday model: softer foam, wider base and an upper that drains in under a minute after rain.
Weight
246 g
Drop
8 mm
Rated
900 km
HL-0940
Track layer
Series 01
Flux Spike
A spike plate without spikes for wet tartan and painted lines. Grip comes from geometry, not rubber volume.
Weight
162 g
Drop
4 mm
Rated
Track
HL-0952
Recovery layer
Series 01
Drift Slip
A knit recovery shoe with a rocker sole for the walk home. Heel folds flat into the pack.
Weight
205 g
Drop
0 mm
Rated
Off-day
Read the sole
The outsole does three jobs at once. The markers show what each pattern is for — nothing on it is there to look fast.
Pointer / Inspect
2.4× optical
Hex lugs
Wet asphalt · 0.62 µ
Flex groove
Forefoot · 14° bend
Heel cell
Impact · 38 % return
Foam
PEBA blend · 81 % return
Plate
Carbon · full length
Upper
Mono-mesh · 21 g
04
Field test
1,200 night kilometres
Run System 01 was run, not photographed, for nine weeks across Tokyo. Rain, painted crossings, 4 am delivery trucks. What follows is what survived.
Test period
63 days
Conditions
Rain · 6–19 °C
Runners
24
Reported failures
00
Fig. 04 — Shibuya · 04:40 JST
Halo Racer — HL-0921
Issued specification for the race model. Every value below is measured, not estimated.
PEBA blend · 39 mm heel stack
Carbon fibre · full length · 1.2 mm
81 % (lab, 20 °C)
Hex lug rubber · 2.5 mm
Mono-mesh · welded overlays
Flat lace · 6 eyelets
Filament · heel and toe · 360 cd/lx
188 g (US 9)
Hand wash · air dry · no dryer
We did not want another shoe that looks fast. We wanted one that measures as fast at kilometre 38.
Aiko Tanabe
Founder · Tokyo
Halcyn started in a running club that met at 4 am in Shibuya, with a 3D printer and a disagreement about what a racing shoe owes its runner. Nothing has been outsourced since.
Fig. 06 — Studio
Notes from the test
Short entries written during the test runs. No conclusions, just what happened.
Shibuya · 04:12 JST
Painted lines are ice
Wet crossings were the first problem. We cut the lug angle twice before the shoe stopped sliding on white paint.
Odaiba · 05:30 JST
The last ten kilometres
Most shoes feel the same at kilometre five. We only tuned what changes after kilometre thirty.
Studio · 09:05 JST
Nothing here is decorative
Every line on the upper is a weld, a vent or a reflector. If a detail could not explain itself, it did not ship.
Access — Run System 01
Issued once, in one batch.
600 pairs, built in Tokyo, released 11 / 26. Registration closes when the batch is allocated — there is no restock and no second colourway.
600 pairs
Ships 11 / 26
Made in Tokyo