







Unisex Lock-Free Bike Shoes CR4
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We offer a 14-day hassle-free return and exchange policy starting from the date you receive your item. To be eligible, products must be unworn, unused, with tags attached, in original packaging, and accompanied by proof of purchase. If the item is defective, damaged, or incorrect, we cover the return shipping cost; for size or personal preference returns, the customer is responsible for shipping fees. Please inspect your order within 72 hours and contact us for any issues.Have a 14-day no-questions-asked return right. Refunds will be processed within 10 business days after we receive and inspect your return. Please contact customer service before returning items and send returns to the designated address; unauthorized returns will not be accepted. For questions, email service@rockbrossport.co.uk
Estimated delivery time

Description
FEATURES
- Lock-free design
- One-hand ETIE knob
- Breathable lightweight
- Soft cushioning comfort
- Non-slip rubber sole
Lightweight · Breathable · Comfortable Fit
Ride Freely, Feel Every Mile
Sweat drips on the road, but your journey never stops.
The CR4 “Tianyu” Lock-Free Bike Shoes accompany every ride — supporting your passion, step by step, through every challenge ahead.
Key Features
🌀 ETIE Lock Knob System
- One-handed control, quick adjustment
- Fine-tuning knob for precise fit
- Relieves pressure on the instep and enhances arch support
💨 Multi-Zone Breathable Design
- Strategically placed air holes for efficient heat and moisture release
- Keeps your feet cool and dry even on long rides
🧦 Soft Inner Cushioning Support
- Delicate inner lining fits the foot shape perfectly
- Thickened cushioning absorbs impact and reduces fatigue
- Skin-friendly material — soft, non-abrasive comfort all day
🦶 Rubber Non-Slip Sole
- Flexible rubber outsole with dense grip texture
- Stable traction even on wet or uneven surfaces
- Enhances pedal efficiency and ground adaptability
⚙️ Lightweight Performance
- Streamlined microfiber + mesh upper for excellent breathability
- Approx. 585g ± 20g (size 42/pair) — light yet durable
📏 Fit Recommendation
- Standard fit, slim and long last design
- Riders with wide feet or high instep are advised to choose one size larger
- Follow the measurement guide to find your perfect size
🧵 Materials & Specs
| Part | Material | Description |
|---|---|---|
| Upper | Microfiber + Mesh | Lightweight breathable |
| Sole | Rubber | Non-slip & wear-resistant |
| Closure | ETIE Knob | Front-tightening design for stable fit |
| Weight | ≈585g ±20g (42 size/pair) | Balanced for performance |
Note: Slight weight differences (±20g) may occur due to variations in materials and color processes. Actual product may vary slightly.
Why Riders Love It
✅ Effortless adjustment while riding
✅ Excellent ventilation for long-distance comfort
✅ Strong grip for safety and control
✅ Stylish minimalist design — perfect for both daily rides & fitness training







FEATURES
- Lock-free design
- One-hand ETIE knob
- Breathable lightweight
- Soft cushioning comfort
- Non-slip rubber sole
Lightweight · Breathable · Comfortable Fit
Ride Freely, Feel Every Mile
Sweat drips on the road, but your journey never stops.
The CR4 “Tianyu” Lock-Free Bike Shoes accompany every ride — supporting your passion, step by step, through every challenge ahead.
Key Features
🌀 ETIE Lock Knob System
- One-handed control, quick adjustment
- Fine-tuning knob for precise fit
- Relieves pressure on the instep and enhances arch support
💨 Multi-Zone Breathable Design
- Strategically placed air holes for efficient heat and moisture release
- Keeps your feet cool and dry even on long rides
🧦 Soft Inner Cushioning Support
- Delicate inner lining fits the foot shape perfectly
- Thickened cushioning absorbs impact and reduces fatigue
- Skin-friendly material — soft, non-abrasive comfort all day
🦶 Rubber Non-Slip Sole
- Flexible rubber outsole with dense grip texture
- Stable traction even on wet or uneven surfaces
- Enhances pedal efficiency and ground adaptability
⚙️ Lightweight Performance
- Streamlined microfiber + mesh upper for excellent breathability
- Approx. 585g ± 20g (size 42/pair) — light yet durable
📏 Fit Recommendation
- Standard fit, slim and long last design
- Riders with wide feet or high instep are advised to choose one size larger
- Follow the measurement guide to find your perfect size
🧵 Materials & Specs
| Part | Material | Description |
|---|---|---|
| Upper | Microfiber + Mesh | Lightweight breathable |
| Sole | Rubber | Non-slip & wear-resistant |
| Closure | ETIE Knob | Front-tightening design for stable fit |
| Weight | ≈585g ±20g (42 size/pair) | Balanced for performance |
Note: Slight weight differences (±20g) may occur due to variations in materials and color processes. Actual product may vary slightly.
Why Riders Love It
✅ Effortless adjustment while riding
✅ Excellent ventilation for long-distance comfort
✅ Strong grip for safety and control
✅ Stylish minimalist design — perfect for both daily rides & fitness training

























































