Castiron Grip
Castiron Grip PR23 — Performance Velcro Climbing Shoe
Castiron Grip PR23 — Performance Velcro Climbing Shoe
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The route doesn't care how you feel. It only responds to how precise you are.
The PR23 is built for climbers who've stopped guessing and started committing. Aggressive downturn, dual velcro closure, and a precision rubber toe patch that reads the hold before you do. This is a performance climbing shoe built for intermediate to advanced climbers who need their gear to match their standard. $109. The Castiron standard.
Key Specifications
- Style: Performance velcro climbing shoe
- Closure: Dual velcro strap — fast, secure, adjustable between problems
- Sole: High-friction rubber — precision edging and heel hooking
- Toe Box: Aggressive downturn — overhangs, pockets, technical face climbing
- Upper: Synthetic microfiber
- Colors: Multiple colorways
- Sizes: EU 35–44 | US Women 5–13W | US Men 3–11M | UK 2.5–9.5
- Best For: Indoor bouldering, overhang climbing, precision edging, intermediate to advanced climbers
Size Guide
| EU | US Women | US Men | UK |
|---|---|---|---|
| EU 35 | US 5W | US 3M | UK 2.5 |
| EU 36 | US 6W | US 4M | UK 3.5 |
| EU 37 | US 6.5W | US 4.5M | UK 4 |
| EU 38 | US 7.5W | US 5.5M | UK 5 |
| EU 39 | US 8.5W | US 6.5M | UK 6 |
| EU 40 | US 9W | US 7M | UK 6.5 |
| EU 41 | US 10W | US 8M | UK 7.5 |
| EU 42 | US 11W | US 9M | UK 8 |
| EU 43 | US 12W | US 10M | UK 9 |
| EU 44 | US 13W | US 11M | UK 9.5 |
Runs small due to aggressive downturn. Consider going up 0.5–1 EU from your normal size. Women size up 1.5 from men's US sizing.
Why the PR23?
When the hold is small and the move is hard, you need a shoe that doesn't negotiate. The PR23's aggressive downturn puts your toe in the right position for overhangs and pockets. The dual velcro closure locks your foot in place between problems without the faff of laces. The high-friction rubber reads the hold before you commit. This is the shoe for climbers who've stopped projecting and started sending. One standard. Every send.
Best For
- Indoor bouldering and overhang climbing
- Precision edging on vertical and technical routes
- Intermediate to advanced climbers
- Competition prep and performance training
Also in the Castiron Grip Line
- N23 — precision edge, dual velcro, EU 35–44
- SWIFT — all-round lace-up, EU 35–44
- Little ALIEN — beginner slip-on, EU 35–44
- ONE — youth velcro, EU 28–35
- HUG — kids beginner, EU 25–32
Materials
Materials
Every Castiron Grip shoe is built from performance-grade materials selected for sensitivity, durability, and precision. Check the individual product page for specific construction details.
Shipping & Returns
Shipping & Returns
We ship free on every order. If it's not right, we'll make it right — free returns or exchanges within 14 days of delivery. Items must be unworn and in original packaging. Start your return through our online portal with your email and order ID.
Dimensions
Dimensions
Fit matters. Check the size guide on each product page for last shape, volume, and fit notes specific to that shoe. When in doubt, reach out — we'll point you to the right size.
Care Instructions
Care Instructions
Protect your investment. Keep your shoes away from direct heat, store them in a cool dry place, and wipe clean with a damp cloth. Never machine wash. Your gear lasts as long as you treat it right.
One Standard. Many Arenas.
Castiron is built for athletes who take their discipline seriously. From the platform to the wall, the ring to the road — every product we make is engineered with the same standard: precision, durability, and performance that earns its place. No shortcuts. No filler. Just gear built for people who show up.
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🚚Free Shipping
Check the Shipping PolicyEvery order ships free. No minimums, no fine print — just your gear on its way.
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