Castiron Grip
Castiron Grip SWIFT — All-Round Lace-Up Climbing Shoe
Castiron Grip SWIFT — All-Round Lace-Up Climbing Shoe
Couldn't load pickup availability
Castiron Grip SWIFT — All-Round Lace-Up Climbing Shoe
Not every session is a project. Some days you warm up on slabs, work a sport route, and finish on the board. The SWIFT was built for that day. Lace-up fit that adapts to your foot. High-friction rubber across every surface. This is a climbing shoe that does everything well — one shoe, every session. One standard. Every send.
The SWIFT's lace-up closure gives you a precision fit that velcro can't match — micro-adjustable across the full foot, locked in exactly where you need it. The moderate profile is comfortable enough for long sessions and precise enough for technical moves. The high-friction rubber compound performs on slab, vertical, and overhang without compromise. Formerly Rock Planet SWIFT — same production, same performance. Castiron standard.
Key Specifications
- Style: All-round lace-up climbing shoe
- Closure: Lace-up — precision fit, fully adjustable
- Sole: High-friction rubber — performs on slab, vertical, and overhang
- Toe Box: Moderate profile — comfortable for long sessions, precise for technical moves
- Upper: Synthetic microfiber — durable, breathable
- Colors: Yellow · Red · Green
- Sizes: EU 35–44 | US Women 5–13W | US Men 3–11M | UK 2.5–9.5
- Best For: Sport climbing, indoor bouldering, multi-pitch, climbers who want one shoe for everything
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 |
Lace-up fit allows fine-tuning. Order your normal EU size. Go down 0.5 EU for a performance fit. Women size up 1.5 from men's US sizing.
Why the SWIFT?
The best all-rounder is the one you reach for without thinking. The SWIFT's lace-up closure gives you a fit that adapts to your foot — not the other way around. The moderate profile means you can wear it through a full session without your toes screaming, then still perform on the technical crux at the top. The high-friction rubber holds on every surface. One shoe. Every session. One standard. Every send.
Best For
- Sport climbing and indoor bouldering
- Multi-pitch climbing and long sessions
- Climbers who want one shoe for every discipline
- Beginners stepping up from their first shoe
Also in the Castiron Grip Line
- PR23 — flagship performance velcro, EU 35–44
- N23 — precision edge, dual velcro, EU 35–44
- Little ALIEN — beginner slip-on, EU 29–35
- 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.
-
🚚Free Shipping
Check the Shipping PolicyEvery order ships free. No minimums, no fine print — just your gear on its way.
-