China One-Stop Shoe Material Manufacturer
Looking for high-quality related shoe materials and industrial materials. We are a reliable Shoe Material supplier, offering personalized customization services, competitive prices and fast delivery services.
product details
Introduce our products
Insoles for shoes: EVA & memory foam, all-day cushioning, anti-fatigue, moisture-wicking, trim-to-fit. MOQ 3,000 pairs, REACH/RoHS. Get free samples now!
Insoles for shoes are removable or cemented foam footbeds placed inside footwear to provide cushioning, pressure redistribution, arch support, and moisture management for everyday, work, casual, and athletic footwear. Solamni manufactures general-purpose shoe insoles from EVA, memory foam, PU, and latex foam formulations in Asker C 25–55 hardness, with molded arch contours, heel cups, and breathable top fabric lamination. The facility supports OEM insole design, custom density zoning, trim-to-fit and full-size options, and batch production from 3,000 pairs with REACH and RoHS compliance for global footwear brands and retailers.
Technical Specifications Matrix
| Parameter | Specification |
|---|---|
| Base Material Formulation | EVA foam, memory foam (PU-based), PU foam, natural latex foam; optional PORON-equivalent heel pad |
| Hardness (Asker C) | 25 – 55 (grade-dependent); dual-density co-molding available |
| Density | EVA: 0.15 – 0.35 g/cm³; memory foam: 0.35 – 0.55 g/cm³; PU: 0.30 – 0.50 g/cm³; latex: 0.55 – 0.75 g/cm³ |
| Thickness Range | Heel: 5 – 12 mm; midfoot: 3 – 8 mm; forefoot: 2 – 5 mm (±0.5 mm) |
| Compression Set | ≤ 25% (EVA); ≤ 15% (PU / memory foam); 50% compression, 50°C, 6 h, ASTM D395 |
| Impact Attenuation | ≥ 30% peak force reduction (mechanical drop test, 8.5 kg mass, 50 mm fall) |
| Moisture Absorption & Desorption | Top fabric: ≥ 120% absorption; desorption to 80% RH equilibrium within 5 h |
| Flex Cycle Threshold | ≥ 150,000 cycles at 22.5° bend, no delamination or foam cracking |
| Arch Support Type | Flat / neutral / medium / high arch; molded foam contour or rigid TPU arch insert (optional) |
| Top Fabric | Polyester mesh, nylon tricot, cotton blend, bamboo-charcoal knit; anti-odor treatment optional |
| Weight per Pair (EU 42) | 50 g – 110 g |
| Size Range | EU 35 – 48 (US men's 4 – 14, women's 5 – 12); trim-to-fit with printed size-gradation cut lines |
| Environmental Compliance | REACH SVHC, RoHS 2.0, OEKO-TEX Standard 100 (optional) |
Quality Control & Testing Standards
Solamni's general shoe insole QC protocol covers foam formulation consistency, molded dimensional accuracy across a wide size range, bonded-fabric durability, and all-day wear performance simulation.
Molding process control. EVA foam is compression-molded at 160–175°C with cure time locked per thickness (45–90 s/mm), platen temperature held within ±3°C. Memory foam and PU are poured into open molds with metered polyol-to-isocyanate ratio verified by gear-flow meters to ±1%. For dual-density insoles, two-shot molding or adhesive-bonded zone assembly is used, with interface peel testing on every first-shot article. Top fabric is laminated with water-based adhesive at 3–4 g/m² via heated roller press at 75–85°C.
Physical destructive testing (per batch, AQL 2.5).
- Hardness - Asker C durometer, 5 readings per zone, ASTM D2240.
- Density - water displacement, ASTM D792, 3 specimens per batch.
- Compression set - 50% compression, 50°C, 6 h, ASTM D395.
- Impact attenuation - mechanical drop rig, 8.5 kg from 50 mm, peak force compared to rigid control.
- Flex resistance - Ross flex tester, 150,000 cycles at 22.5°, inspection for foam cracking and fabric delamination.
- Moisture management - AATCC TM195 absorption and desorption rate on top fabric.
- Bond peel strength - top fabric to foam, 15 mm strip, 300 mm/min, ≥ 3 N/15 mm.
- Dimensional accuracy - 2D projector or CMM, arch height ±0.5 mm, heel cup depth ±0.5 mm, verified across 3 consecutive sizes per batch.
- Anti-odor efficacy - ISO 20743 antibacterial test against Staphylococcus aureus, reduction ≥ 95% for treated grades.
- Color and print - spectrophotometer ΔE ≤ 1.5; size-gradation print adhesion by tape test (ASTM D3359).
Chemical and regulatory testing. Each foam raw material lot is verified by melt flow index (EVA) or isocyanate index (PU). Finished insoles are screened by GC-MS for REACH SVHC and ICP-OES for RoHS restricted elements. Latex grades are tested for protein residue below 1 μg/g for hypoallergenic claims. Third-party SGS or Intertek reports are available on request.
Equipment backing production stability. The plant operates 6 compression molding presses (200T–400T), 4 PU pouring lines with automated mix heads, 2 EVA injection machines, 3 fabric laminating lines, a CNC contour cutting station, and an automated insole-weight sorter. This setup supports density variation below 5% across cavities and consistent arch contour across the full EU 35–48 size range.
Cost savings
Medium-density EVA insoles (Asker C 35–45) with neutral arch contour and polyester mesh top fabric are standard for casual footwear, canvas shoes, and lifestyle sneakers. Heel thickness of 6–8 mm and forefoot thickness of 2–3 mm balance cushioning with a low-profile fit.
Work boots and safety footwear.
High-density EVA or PU insoles (Asker C 45–55) with anti-fatigue heel cushioning and moisture-wicking top fabric are specified for work boots, safety shoes, and industrial footwear. Deeper heel cups (8–12 mm) and PORON-equivalent heel pads reduce standing fatigue during 8–12 hour shifts.
Dress shoes and formal footwear.
Thin-profile EVA or latex insoles (heel 3–5 mm, forefoot 1.5–2.5 mm) with leather-look or microfiber top cover are used for dress shoes, Oxfords, and formal footwear where stack height is constrained. Low-profile arch support maintains a sleek fit without sacrificing comfort.
Hiking and outdoor boots.
High-density PU or EVA insoles (Asker C 45–55) with reinforced arch contour and deep heel cup provide stability on uneven terrain. Moisture-wicking and anti-odor top fabrics address prolonged wear in variable weather conditions.
Walking and comfort footwear.
Memory foam insoles (Asker C 25–35) with molded contoured footbed are used for walking shoes, diabetic footwear, and comfort-oriented casual lines. Memory foam's viscoelastic response redistributes plantar pressure and conforms to individual foot shape.
Aftermarket and retail replacement insoles.
Solamni supplies trim-to-fit replacement insoles to footwear retailers, pharmacies, orthotic clinics, and online marketplaces. Standard sizes cover EU 35–48 with printed size-gradation cut lines, and retail-ready packaging (hang card, blister pack, or polybag) is available on request.
FAQ
Q: What is the difference between memory foam, EVA, and PU insoles for all-day everyday wear?
Q:How thin can a dress-shoe insole be while still providing arch support and cushioning?
Q: What packaging and private-label options are available for retail aftermarket insoles?
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why choose us
why choose our products
We specialize in providing premium-grade materials for industrial applications. Our focus on wholesale sourcing ensures you receive competitive pricing on large orders, alongside flexible fabric customization to meet your exact specifications. Whether you need high-volume production runs or specialized orders, we ensure your success with fast delivery and exceptional support.
- Bulk Sourcing: Competitive pricing for large-scale orders.
- Customization: Flexible solutions tailored to your industry needs.
- Global Shipping: Fast, reliable delivery to international markets.
- High-Quality Standards: Rigorous testing and quality assurance to ensure performance and durability.
Elite Partners
Direct collaboration with DHL, FedEx, UPS, TNT, and EMS to ensure maximum shipping efficiency.
Custom Logistics
Flexible options covering air freight, sea cargo, and express door-to-door delivery.
Secure Transit
Professional packaging and full-course tracking for peace of mind.
Our Advantage
Sourced for Excellence: We meticulously select only premium-grade raw materials.
Expert Craftsmanship: Our team comprises experienced technicians operating advanced machinery.
Proactive QC: We implement rigorous in-line inspections throughout every stage of production.
Zero-Risk Standards: A dedicated QC team performs final double-inspections, fully compliant with your chosen AQL standards before packaging.
Unwavering Consistency: We maintain a strict, non-negotiable commitment to top-tier quality.
fAQ
A1: Approximately 25-35 days after all specifications and order details are confirmed.
A2: We typically require a 30% deposit in advance with the remaining 70% balance due before shipment. Alternatively, we accept a 50/50 split depending on the final order quantity.
A3: We accept T/T (Telegraphic Transfer), PayPal, and Western Union.
A4: Free samples are available! Custom sample preparation takes about 3-5 days once all details are confirmed
ASTERISM Import And Export Co., Ltd.
Let's build a profitable future together. We sincerely welcome global clients for long-term strategic cooperation. Contact us today-our team is ready to respond to your inquiries swiftly.
ace01@eurus-cn.com +8613459576329
Whatsapp+8613459576329 
