Professional Guide

Rubber Outsoles Encyclopedia

The outsole is the foundation of every shoe. From natural rubber's grip to EVA's cushioning, understanding outsole materials is critical for product performance and cost optimization.

1 Outsole Material Types

🌳

Natural Rubber

Harvested from rubber trees. Excellent grip. Premium positioning.

  • • Best wet grip
  • • Price: $3.00-5.00/kg
  • • 40-70 Shore A
🔵

EVA

Ethylene-vinyl acetate foam. Lightweight cushioning. Athletic shoes.

  • • Lightest density
  • • Price: $2.00-3.50/kg
  • • 15-45 Shore C
💜

PU (Polyurethane)

Dual-density foam. Excellent durability. Work shoes.

  • • Superior durability
  • • Price: $2.50-4.00/kg
  • • 35-60 Shore A

TPR

Thermoplastic rubber. Process versatility. Casual shoes.

  • • Easy to mold
  • • Price: $1.50-2.50/kg
  • • 50-85 Shore A

2 Shore Hardness Guide

Shore hardness measures material resistance to indentation. Different parts of the shoe require different hardness levels.

40A (Soft) 60A (Medium) 80A (Hard)

Hardness by Application

40-50 Shore A

Heel cushioning. Midsole applications. Maximum comfort.

55-65 Shore A

Outsole ball area. Flexibility + durability. Natural foot flex point.

70-85 Shore A

Heel strike zone. Maximum durability. Abrasion resistance.

Material Density

EVA 0.15-0.35 g/cm³
PU 0.25-0.45 g/cm³
TPR 0.90-1.10 g/cm³
Vulcanized Rubber 1.10-1.30 g/cm³

3 Traction Patterns

Common Patterns

Diamond Pattern

Standard traction. All-purpose grip. Most common.

Chevron Pattern

Directional grip. Forward motion traction. Athletic shoes.

Lug Pattern

Aggressive traction. Outdoor/hiking. Deep grooves.

Smooth/Clean

Dress shoes. No pattern. Indoor use.

Grip Performance

Wet Concrete

Lug + siping essential

Indoor Floors

Non-marking rubber preferred

Sports Courts

Herringbone pattern standard

Outdoor/Trail

Multi-directional lugs needed

4 China Suppliers

Production Regions

Guangzhou, Guangdong

Largest outsole production. All material types. Sports shoe specialists.

Wenzhou, Zhejiang

Vulcanized rubber. Vulcanized canvas shoes. Traditional工艺.

Quanzhou, Fujian

Sports brand suppliers. Athletic outsoles. Premium quality.

Price Reference (FOB China)

Vulcanized Rubber $1.50-2.50/pair
EVA Outsole $1.00-2.00/pair
PU Sole $1.50-3.50/pair
TPR Sole $0.80-1.50/pair
Rubber Sheet (per kg) $2.00-4.00/kg