Description
The foundation of every great shoe is invisible to the eye, but felt with every step
A high-performance sole is more than a single material—it’s an engineered system. Modern footwear construction typically divides the sole into two distinct layers: the midsole (responsible for cushioning, stability, and shock absorption) and the outsole (the contact layer with the ground, providing traction and durability) .
At Xinzi Rain Material Station, we offer a comprehensive range of sole materials—from lightweight EVA for responsive cushioning to durable RB for maximum traction. Whether you’re designing athletic performance footwear, casual comfort shoes, or fashion-forward styles, our six core materials provide the building blocks for your vision.
Complete Material Comparison
Material | Abbreviation | Full Name | Main application areas | Key Features |
| Single Color EVA | EVA | Ethylene Vinyl Acetate | Midsole | Lightweight, highly elastic, and easy to process |
| Two Color EVA | Dual-Color EVA | Ethylene Vinyl Acetate | Midsole | Lightweight with a two-tone design, combining aesthetics and function |
| Two Color MD | Dual-Density MD | Moulded / PHYLON | Midsole | EVA secondary high-pressure molding, adjustable hardness and density |
| TPR | TPR | Thermoplastic Rubber | Outsole | Rubber elasticity + thermoplastic processing, recyclable |
| RB | RB | Rubber | Outsole | Wear-resistant, anti-slip, and with strong grip |
| TPU | TPU | Thermoplastic Polyurethane | Midsole/Outsole | High mechanical strength, wear-resistant, and with a wide hardness range |
Aesthetics Meets Performance
Characteristic | Description |
| Visual Impact | Two-tone design enhances product recognizability |
| Weight | Maintains the lightweight properties of EVA |
| Processability | In-mold molding reduces post-processing steps |
| Waste Reduction | Compared to single-color processes, injection molding waste is reduced by more than 4 times |
| Best For | Suitable for athletic shoes, casual fashion shoes, and brand identity design |
Care & Durability Guidelines
Material | Cleaning Methods | Precautions |
| EVA / MD | Wipe with a damp cloth; use mild soap to clean stubborn stains | Avoid direct sunlight (may shrink); keep away from high heat sources. |
| TPR | Wipe with a damp cloth; use a neutral detergent | Avoid prolonged contact with gasoline/solvents (may swell). |
| RB | Clean with a brush; use a rubber cleaner | Avoid immersion in oils; keep away from ozone environments (copiers, etc.). |
| TPU | Wipe with a damp cloth; use mild soap to clean stubborn stains | UV resistant formula optional; fully recyclable. |
