Jump
+2–3 in
vertical, on average
The plate stores the energy of your dip and gives it back at take-off. Our athlete testing with a certified pedorthist averaged two inches of added vertical.
CRBN V2 · Carbon fibre performance insole
Jump higher.
Sprint faster.
Carbon fibre
under your feet.
Australia's carbon fibre performance insole. Backed by research, trusted by 160+ athletes, shipped free from Sydney in 2–5 days.
- 4.7 · 160 reviews
- 30-day guarantee
- Free express AU shipping
Worn on courts from local
leagues to the Nike EYBL
What changes on court
Three things you feel by the first session.
This isn't a slow burn. Athletes describe the difference as springy but firm the moment they stand up, and it sharpens as the plate breaks in.
Speed
Faster
sprints & first steps
A stiff forefoot stops your push dying in soft foam, so more of the force you generate goes into the floor on every stride and cut.
Protection
−25–30%
peak impact forces
Carbon fibre insoles are associated with sharply lower peak impact forces on jumps, landings and direction changes, with athletes reporting fewer common sports injuries.
The build
V2. Rebuilt from the plate up.
Our first insole sold out faster than we could restock it, so we took it back to the workshop. V2 bends naturally with the arch of your foot and returns energy more powerfully than before, while staying flexible enough to support every movement.
DESIGN SCHEMATIC · V2
PRODUCTION UNIT · CRBN V2
Every V2 starts as this schematic: a full-length carbon plate tuned to bend with the arch, under a printed top sheet. Drag the scan line and the drawing becomes the pair that ships.
BUILD SPEC — FOUR-LAYER STACK
- 01FULL-LENGTH · HEEL TO TOE
100% carbon-fibre baseplate
A single carbon-fibre plate runs the entire length of the insole. Under load it flexes and snaps back, returning the energy that foam simply absorbs. It is the spring in the system.
- 02STABILITY · NO DEAD WEIGHT
High-support polyurethane layer
The interface between foot and plate. High-support polyurethane keeps the foot seated and stable over the carbon without adding dead weight to every stride.
- 03ARCH-TUNED FLEX PROFILE
Contoured arch
The plate is contoured to the arch of the foot, so it bends naturally with you through every jump, sprint and cut instead of fighting the movement.
- 04IMPACT CONTROL · FULL STACK
Heel-to-toe shock prevention
Shock management is built into the stack itself, absorbing impact from first heel contact through toe-off.
Real players. Real footage.
The athletes who actually play in them.
Not stock models. These are players putting up numbers on real courts, and putting CRBN under their feet to do it.
"These CRBN insoles really make a difference, I chucked out my old soft floppy insoles. Any serious player needs to try these. I use them every game now. Seriously bouncy and insane for vertical."
"These insoles are my secret. If you're serious about performance, check out CRBN, a different type of impact."
Official partnership
AAU championsTeam Sphera × CRBN
The insole of AAU champions.
Team Sphera is the #1-ranked AAU basketball program in Sydney — and now AAU champions. We supply the entire roster, and they compete in CRBN V2 across the national AAU circuit. It's the toughest, most public test a performance insole can get, and it's why we sponsor them.
By the numbers
- Title
- AAU champions
- Ranking
- #1 AAU program in Sydney
- On feet
- Full roster in CRBN V2
From the court
Certified design, not a marketing claim
Meet Karl Kang,
the pedorthist behind CRBN.
We didn't buy a generic insole and slap a logo on it. We built CRBN directly with Karl Kang, a pedorthist certified by the American Board for Certification in Orthotics, Prosthetics and Pedorthics, with over 25 years designing quality insoles. Through Karl, the V2 plate was worked on with NBA G League athletes.
- Certification
- Certified Pedorthist (ABC)
- Cert. number
- CPed4290
- Certified since
- April 2017 · current to 2027
- Trained at
- M.D. Institute of Biomechanics, Indiana
"My full endorsement, for both performance and support of athletic movement, including a tested average of two inches of added vertical."
Karl Kang · ABC Certified PedorthistThe import math
Why pay $200+ to import carbon?
CRBN V2 is designed with a certified pedorthist, made with a full-length carbon fibre plate, and shipped free from Sydney. No customs, no duties, no three-week wait, and local returns if anything's not right. Performance tech, minus the import tax.
| Your foam insole | CRBN V2 | Imported carbon | |
|---|---|---|---|
| Full-length carbon plate | |||
| Energy return | Absorbs it | Stores & returns | Stores & returns |
| Price | Came with the shoe | $65 AUD | $200+ AUD landed |
| Designed with a certified pedorthist | Varies | ||
| Ships from | — | Sydney, free express | The USA |
| At your door | — | 2–5 days | Weeks, plus customs |
| Returns | — | Local, 30-day guarantee | International postage |
Get the local one· $65 AUD
100% Australian owned & operated. We don't dropship, and never will.
The guarantee
It works. Or it's yours to return.
Train in them. Play in them. If you're not feeling the difference within 30 days of delivery, send them back for a full refund of the purchase price. No hoops, no restocking fees.
In addition to your rights under Australian Consumer Law ·how returns work
How long does break-in take?
Give them 3–5 sessions. Carbon fibre is stiffer than the foam you're used to, that stiffness is the spring. Most athletes feel 'springy but firm' on day one and fully dialled-in within a week. Start with training sessions before game day. Still not feeling it after 30 days? That's what the guarantee is for.
How do I pick my size?
CRBN sizing follows Nike sizing. Sizes come in ranges (7.5/8 up to 12.5/13) with US Mens and US Womens fits, chosen at checkout. If you wear another brand or sit between sizes, measure your foot heel-to-longest-toe in centimetres and use the table on our sizing page.
Are carbon fibre insoles legal in my sport?
An insole doesn't change your shoe's compliance in normal club, school and rep competition, carbon plates are already common in the shoes themselves. We're not aware of any Australian basketball, netball, volleyball or football competition that restricts insoles. If you compete at an elite level with strict equipment rules, check your federation's gear list before game day.
How does the 30-Day Feel-The-Difference Guarantee work?
Train in them. Play in them. If you're not feeling the difference within 30 days of delivery, email us and send them back for a full refund of the purchase price. The insoles need to reflect normal testing, not excessive wear or modification. This guarantee is in addition to your rights under Australian Consumer Law.
$10 off your first pair
Tell us your game, get a code.
Send us the sport you play and how you'll use your CRBNs, and we'll email back a $10-off code plus our free vertical jump plan. We read every one, it helps us build a better insole.
No customs. No three-week wait. No excuses.
Dominate your
next season.
Buy CRBN V2· $65 AUD
Free express from Sydney, at your door in 2–5 days
4.7 · 160 reviews30-day Feel-The-Difference Guarantee100% Australian owned