Ultimate Encyclopedia | Comprehensive Applications of TPU in Athletic Footwear

Athletic footwear represents a major downstream market for TPU (thermoplastic polyurethane elastomer), which is widely used in outsoles, midsoles, air cushions, shoe trims, shoe upper yarns, waterproof and breathable films, hot-melt adhesive films, and even 3D printing—giving rise to the concept of '100% TPU athletic shoes.' Companies including Lubrizol, Covestro, Huntsman, and Wanhua Chemical have all launched corresponding TPU material solutions featuring recyclability and environmental sustainability. Below, we present a comprehensive overview of TPU applications in athletic footwear. For clarity, we categorize these applications by the three primary components of a shoe: the upper, the midsole, and the outsole. 1. Upper: TPU Yarns and Leather Breathable knitted uppers and waterproof leather uppers are common in athletic footwear. 'Knit' refers to uppers fully formed in one piece via seamless weaving—TPU yarns can be used for such knitting, yielding soft yet extremely durable fabrics with high abrasion resistance and excellent suitability for thermoforming (e.g., 3D heat-press shaping and structural setting). TPU yarn upper — Jie Te Jia Beyond knitted uppers, TPU can also be processed into synthetic leather for use in uppers and decorative patches.

Comprehensive Analysis and Market Outlook of Supercritical Physical Foaming Technology in Shoe Midsole Materials

Celanese, a U.S.-based producer of acetate products and engineering materials, possesses deep expertise in the engineering materials sector. Although its key end markets—including construction, automotive, and consumer goods—remained sluggish in 2025, Celanese maintained a stable strategic footprint in engineering materials. In Q1 2025, order volumes for Celanese’s engineering materials increased notably, with orders in March and April significantly stronger than those in January and February. Driven by optimized working capital management, reduced capital expenditures, and cost-cutting initiatives, Celanese expects to generate $700–800 million in free cash flow in 2025—providing solid financial backing for continued R&D in supercritical foaming materials. Lubrizol, a global leader in specialty chemicals and an industry ‘hidden champion,’ holds a leading position in advanced TPU material development. Though smaller in scale than chemical giants like BASF, Lubrizol excels in technical specialization, delivering TPU materials with superior performance. In September 2025, Lubrizol established a Foaming Applications Center of Excellence (COE) in the Asia-Pacific region. Through value-chain collaboration, this innovation platform will drive continuous industry transformation in physical foaming technologies. The COE will accelerate the development of innovative TPU materials specifically designed for foamed midsoles, meeting the footwear industry’s dual demands for high performance and sustainability. Industry News: Lubrizol Establishes Foaming Applications Center of Excellence (COE) to Accelerate Midsole Innovation Wanhua Chemical, a leading Chinese chemical enterprise, has built a high-performance materials platform centered on TPU and PEBA for supercritical foaming footwear applications. Through sustained product innovation, it delivers diversified solutions to the footwear materials industry. In the TPU domain, Wanhua’s Wanthane® TPU series includes the WHT-1495RV grade—a polyester-based TPU offering high transparency and excellent mechanical properties, specially developed for air cushions and transparent soles, and suitable for extrusion and injection molding processes. In the PEBA (polyether block amide) domain, Wanhua launched its nylon 12-based elastic PEBA in April 2024. As a high-performance elastomer, PEBA brings innovative potential to footwear materials thanks to its unique physical and chemical properties. He Yong, General Manager of Wanhua’s New Materials Business Unit, stated that PEBA complements Wanhua’s existing TPU and POE portfolios, creating synergies that collectively strengthen Wanhua’s comprehensive solution offerings for foamed elastomer footwear materials—and provide customers with higher-quality, more diverse options. According to Wanhua, its PEBA materials deliver exceptional elasticity, outstanding abrasion resistance, and superior chemical stability—enabling athletic shoes to be lighter, stronger, and more durable, thereby delivering an ultimate experience for athletes. From a product strategy perspective, Wanhua’s coordinated deployment of TPU and PEBA establishes a complete portfolio covering conventional performance, high-performance, and sustainable footwear material requirements. TPU products offer one-stop solutions, while PEBA—renowned for its lightweight nature, high resilience, and low-temperature resistance—has become the ideal choice for premium running shoe midsoles.

Huntsman Showcases High-Performance Footwear Material Solutions

May 20, 2026

Huntsman showcased advanced TPU and PU solutions at the 34th China Shoe & Leather Exhibition, highlighting technologies designed to enhance automation and efficiency in footwear manufacturing.

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