Estimated reading time: 12 minutes
Table of Contents
- Overview
- Full Specifications
- Construction & Materials
- On-Wall Performance
- Sizing Guide — Australia & New Zealand
- PR23 vs The Competition
- Full Castiron Grip Lineup
- Who Is It For?
- Formerly Rock Planet
- Bouldering Shoes in Australia & New Zealand — 2026
- Shop the PR23
- Verdict & Rating
- FAQ
Overview
The Castiron Grip PR23 is the performance velcro bouldering shoe in the Castiron Grip lineup — built for Australian and New Zealand climbers who want precision footwork without the La Sportiva or Five Ten import price tag. At AU$195, it delivers a precision rubber rand, aggressive asymmetric downturn, and dual velcro closure in a competition-capable package. International shipping to Australia and New Zealand.
The PR23 is purpose-built for performance on Australian sandstone, granite, and indoor wall surfaces — aggressive asymmetric last for toe precision on small holds, dual velcro for quick transitions between boulder problems, and a sticky rubber rand that grips Blue Mountains sandstone, Arapiles quartzite, and commercial wall textures equally well.
Also see our earlier in-depth review: Castiron Grip PR23 — Best Bouldering Shoes for Advanced Climbers | Australia & New Zealand 2026 →
Full Specifications
| Spec | Detail |
|---|---|
| AU Price | AU$195 |
| Closure | Dual Velcro |
| Last | Asymmetric, aggressive downturn |
| Rubber | Precision sticky rubber rand |
| Upper | Synthetic microfibre |
| Midsole | Semi-stiff board lasted |
| Gender | Unisex |
| Best For | Bouldering, sport climbing, indoor walls |
Construction & Materials
Asymmetric Last with Aggressive Downturn — Pulls the big toe into a power position for precision footwork on small edges and pockets. Ideal for the technical footwork demanded by Australian sandstone and granite bouldering. The aggressive downturn concentrates force through the big toe for power on overhangs and steep problems.
Dual Velcro Closure — Two velcro straps for a secure, adjustable fit. Quick on/off between boulder problems — essential for sessions at Arapiles, Grampians, or your local indoor wall. Compared to lace-up shoes like the Castiron Grip SWIFT, the PR23's velcro system trades micro-adjustability for speed.
Sticky Rubber Rand — High-friction rubber compound grips sandstone, quartzite, granite, and indoor wall textures. Wraps around the toe box for smearing capability on slabs and volumes.
Semi-Stiff Board Last — Enough stiffness for edging on small footholds, with enough flex for smearing and heel hooks. The sweet spot for all-round Oceania bouldering and sport climbing performance.
On-Wall Performance
- Edging — Semi-stiff board last transfers power to small footholds on technical Australian sandstone and granite
- Smearing — Sticky rubber rand wraps the toe box for slab and volume smearing
- Heel Hooks — Rubber heel cup provides grip on heel hook moves common in Grampians bouldering
- Toe Hooks — Rand rubber extends over the toe for toe hook contact on overhanging problems
- Pocket Climbing — Asymmetric last concentrates power through the big toe for technical pocket work
- Bouldering — Dual velcro for quick removal between attempts; aggressive enough for V7+ problems
Sizing Guide — Australia & New Zealand
Due to the aggressive downturn, the PR23 runs small. Size up 0.5–1 EU from your street shoe size. The synthetic upper has minimal stretch compared to leather shoes.
| EU | AU/NZ Men's | AU/NZ Women's | UK |
|---|---|---|---|
| 35 | 3.5 | 5 | 2.5 |
| 36 | 4 | 5.5 | 3.5 |
| 37 | 4.5 | 6 | 4 |
| 38 | 5.5 | 7 | 5 |
| 39 | 6.5 | 8 | 6 |
| 40 | 7.5 | 9 | 6.5 |
| 41 | 8.5 | 10 | 7.5 |
| 42 | 9.5 | 11 | 8 |
| 43 | 10 | 12 | 9 |
| 44 | 10.5 | 13 | 9.5 |
Not sure on sizing? Email support@castironlift.com — we respond within 12 hours.
PR23 vs The Competition — Australia & New Zealand 2026
| Feature | PR23 | La Sportiva Tarantulace | Five Ten Hiangle |
|---|---|---|---|
| AU Price | AU$195 | AU$160–AU$190 | AU$220–AU$250 |
| Velcro Closure | ✅ Dual | ✅ Single | ✅ Single |
| Aggressive Downturn | ✅ Yes | ❌ Moderate | ✅ Yes |
| Sticky Rubber Rand | ✅ Yes | ✅ Yes | ✅ Stealth C4 |
| Semi-Stiff Board Last | ✅ Yes | ❌ Softer | ❌ Softer |
| Free AU Shipping | ✅ Over AU$150 | Varies by retailer | Varies by retailer |
Full Castiron Grip Lineup — Which Model Is Right for You?
| Model | Closure | Downturn | Best For | Level |
|---|---|---|---|---|
| PR23 (this shoe) | Dual Velcro | Aggressive | Bouldering, overhangs, sport climbing | Advanced |
| N23 | Dual Velcro | Moderate–Aggressive | Precision edging, sport climbing | Intermediate–Advanced |
| SWIFT | Lace-Up | Moderate | All-round, sport climbing | Beginner–Intermediate |
| ONE | Velcro | Flat | Youth development | Youth |
| HUG | Velcro | Flat | Kids first shoe | Kids Beginner |
| Little ALIEN | Slip-On | Flat | Kids beginner, slip-on | Kids Beginner |
Who Is the PR23 For?
- ✅ Australian boulderers — Grampians, Arapiles, Blue Mountains, and indoor walls
- ✅ New Zealand climbers — Climbing New Zealand affiliated, Castle Hill limestone bouldering
- ✅ Intermediate to advanced climbers — ready to step up from beginner shoes
- ✅ Indoor wall regulars — sticky rubber performs on all commercial AU/NZ wall surfaces
- ✅ Outdoor sport climbers — sandstone, quartzite, and granite performance
Formerly Rock Planet — Now Castiron Standard
The PR23 was formerly available under the Rock Planet brand — same construction, same last, same proven rubber compound. Rock Planet built a strong reputation in the climbing community for accessible performance footwear, and that DNA carries directly into the Castiron Grip line. If you climbed in Rock Planet shoes, you already know what the PR23 delivers.
The Castiron Grip line represents the next chapter: unified brand standards, expanded sizing, and a next-generation model lineup arriving in 2027. The PR23 is the current generation — and it's the same shoe that earned Rock Planet its reputation in the Australian and New Zealand market.
Bouldering Shoes in Australia & New Zealand — 2026
The Australian and New Zealand climbing shoe market is dominated by imported European brands — La Sportiva, Scarpa, and Five Ten — with retail prices that regularly hit AU$200–AU$260 for performance velcro bouldering shoes. For climbers affiliated with Climbing Australia or Climbing New Zealand, the cost of quality footwear is a genuine barrier to progression. The Castiron Grip PR23 enters the Oceania market at AU$195 — dual velcro, aggressive asymmetric downturn, sticky rubber rand — with international shipping direct to Australia and New Zealand.
For Australian boulderers heading to the Grampians or Arapiles, the PR23's sticky rubber compound performs well on the quartzite and sandstone that defines these iconic venues. The dual velcro closure means quick removal between attempts on your project — critical when you're resting between burns on a hard problem. New Zealand climbers at Castle Hill will find the aggressive asymmetric downturn gives the toe precision and power needed for the technical limestone footwork that makes Castle Hill problems so demanding. The semi-stiff board last provides the edging power needed for small footholds without being so stiff that smearing on slabs becomes difficult.
International shipping to Australia: AU$25 standard (5–8 business days), AU$45 expedited (2–4 business days). Free shipping on orders over AU$150 — the PR23 at AU$195 qualifies automatically. New Zealand: same rates apply.
Shop the Castiron Grip PR23
PR23 — Performance Velcro Bouldering Shoe
AU$195 · Dual Velcro · Aggressive Downturn · Sticky Rubber · International shipping · Free over AU$150
Shop PR23 — AU$195 →Verdict & Rating
Overall: ⭐⭐⭐⭐⭐ 4.7/5
- Edging Performance: 4.5/5
- Smearing: 4.5/5
- Bouldering Versatility: 5/5
- Value for Money (AU/NZ): 5/5
- Comfort Out of Box: 4/5 (aggressive downturn — size up 0.5–1 EU)
The Castiron Grip PR23 is the best performance velcro bouldering shoe under AU$200 for Australian and New Zealand climbers in 2026. Dual velcro closure, aggressive asymmetric downturn, sticky rubber rand — everything you need to progress from intermediate to advanced climbing without paying Five Ten Hiangle or La Sportiva import prices. The best value bouldering shoe in the Oceania market.
Frequently Asked Questions
Are the PR23 suitable for Australian outdoor climbing?
Yes — the sticky rubber rand performs well on Grampians quartzite, Blue Mountains sandstone, and Arapiles conglomerate. The aggressive asymmetric downturn gives you the toe precision and power needed for technical Australian bouldering problems and sport routes.
How does the PR23 compare to Five Ten Hiangle for Australian climbers?
The PR23 offers dual velcro vs the Hiangle's single strap, a semi-stiff board last for better edging, and comparable rubber performance — at AU$195 vs the Hiangle's AU$220–AU$250. For Australian boulderers who want dual velcro and better edging stiffness at a lower price, the PR23 is the stronger value proposition.
Do the PR23 run small?
Yes — due to the aggressive downturn, size up 0.5–1 EU from your street shoe size. The synthetic microfibre upper has minimal stretch, so err on the side of sizing up if you're between sizes.
How long does international shipping to Australia and New Zealand take?
Standard international shipping to Australia and New Zealand typically arrives in 5–8 business days. Expedited shipping (2–4 business days) is available at checkout. Free shipping on orders over AU$150 — the PR23 at AU$195 qualifies automatically.
Are the PR23 approved for Climbing Australia competitions?
The PR23 meets standard climbing shoe specifications for Climbing Australia and Climbing New Zealand affiliated competitions. Always verify current equipment rules with your specific competition organiser before competing.
Can I use the PR23 for both bouldering and lead climbing?
Yes — the PR23 is versatile enough for both disciplines. The aggressive downturn and dual velcro make it particularly well-suited to bouldering sessions at Grampians or your local indoor wall. For more moderate terrain and all-day comfort, consider the N23 or SWIFT instead.
External Resources
- Climbing Australia — Official Federation
- Climbing New Zealand — Official Federation
- theCrag — Australia & NZ Climbing Guide
- Climbing Magazine — Best Climbing Shoes Guide
- 99Boulders — Climbing Shoe Reviews
📚 More from the Castiron Grip Climbing Reviews Hub:
Castiron Grip Climbing Shoes Review 2026 — Australia & New Zealand Hub →
Written by T-K