Why EVA Is Still the Default Insole Material
An EVA insole earns its place the unglamorous way: ethylene-vinyl acetate foam delivers a strong balance of cushioning, weight, processing flexibility, and cost efficiency. It molds cleanly and takes color well. Hardness can be tuned from a soft 23 Asker C up to a firm 43, allowing one material family to cover applications from sandals to work footwear.
EVA has a known weakness, and we would rather name it than hide it: compression set. Standard foam can pack out with extended daily wear. Higher-resilience grades can slow that flattening, while post-industrial recycled, sugarcane-based, and algae-based options add recycled or bio-based content. These options can support existing footwear programs with minimal changes to tooling and production processes.
EVA compound formulation and mixing are handled by upstream material suppliers. FX Footwear applies those materials through our own EVA foaming, molding, die-cutting, and converting facilities in China, Vietnam, and Indonesia. EVERYDAY is our EVA insole series; the range is below.
The EVERYDAY EVA Insole Range
EVERYDAY Essential
High-elastic EVA
The volume baseline, with high-elastic, high-rebound, and PU-like comfort options.
EVERYDAY Lite
Lightweight ETPE
Lightweight particle foam with 60% typical resilience for athletic and travel footwear.
EVERYDAY Recycled
35–50% post-industrial recycled EVA
Designed for recycled-content targets while maintaining compatibility with standard EVA processing.
EVERYDAY Sugarcane
35–50% sugarcane-based EVA
Helps reduce reliance on fossil-based materials while maintaining EVA cushioning performance.
EVERYDAY Algae
20% algae-based EVA
A soft bio-based option for comfort-oriented footwear requiring a softer cushioning feel.
EVA Insole Specifications
| Series | Hardness (Asker C) | Density (g/cm³) | Resilience | Compression Set |
|---|---|---|---|---|
| EVERYDAY Essential | 28 C, 32 C, 35 C | 0.12, 0.13, 0.14 | 45% | 70% |
| EVERYDAY Lite | 28 C | 0.13 | 60% | 65% |
| EVERYDAY Recycled | 28 C, 32 C | 0.12 | 50% | 70% |
| EVERYDAY Sugarcane | 43 C | 0.20 | 35% | 65% |
| EVERYDAY Algae | 23 C | 0.18 | 45% | 75% |
Typical series-level production values from our EVA insole specifications. Compression set is tested according to ASTM D3574 and varies with density, VA content, formulation, temperature, and test conditions. Full technical data sheets are available on request.
How to Choose an EVA Insole
Match hardness to the shoe first. Soft grades around 23–28 Asker C suit sandals, casual footwear, and comfort-focused applications. Mid-range grades around 28–32 Asker C cover most casual and athletic builds. Firm foam at 35 Asker C and above belongs in work and safety footwear where structure matters more than plushness. EVA hardness can be customized based on the footwear application, cushioning target, and support requirements.
Then decide how the part is made. Molded EVA gives contoured heel cups and arch geometry; die-cut flat stock costs less and ships faster. We run both processes, so the choice follows your volumes and tooling budget rather than our equipment.
If packing out is the complaint you are trying to fix, consider a higher-resilience EVA grade, or compare PU insoles and supercritical foam insoles. For post-industrial recycled and bio-based targets, see our sustainability program.
EVA programs depend on consistent compounds from upstream material suppliers and disciplined downstream process control. FX Footwear applies its own EVA foaming, molding, and converting capabilities from first sample through mass production.
EVA programs depend on consistent compounds from upstream material suppliers and disciplined downstream process control. FX Footwear applies its own EVA foaming, molding, and converting capabilities from first sample through mass production.
Three Ways to Reduce an EVA Insole's Footprint
Post-industrial recycled EVA content at 35–50%, sugarcane-based EVA, and a 20% algae-based grade can support recycled and bio-based material targets while remaining compatible with standard EVA processing.
EVA Insole FAQs
What does EVA insole mean?
EVA stands for ethylene-vinyl acetate, a copolymer foamed into a light, closed-cell cushioning material. An EVA insole is a footbed cut or molded from that foam, and it is one of the most widely used insole materials in the footwear industry.
EVA insole vs memory foam: which is better?
They do different jobs. EVA springs back quickly and weighs less; memory foam, a polyurethane, recovers slowly and conforms to the foot. For a plush sink-in feel, consider PowerFrame Fit. For lightweight, responsive cushioning at volume pricing, EVA is often the better fit.
How long do EVA insoles last?
Compression set varies with density, VA content, formulation, temperature, and test method. In the typical series data above, compression set ranges from 65% to 75% under ASTM D3574; where longer cushioning retention is the priority, compare higher-resilience EVA, PU, or supercritical foam for the specific application.
Is EVA good for safety shoe insoles?
Yes, in firmer grades. Foam in the 32–43 Asker C range provides structure for work footwear, and EVERYDAY Sugarcane adds bio-based content in the same hardness band. The final material and construction should follow the required support, cushioning, and durability targets.
