This 3D Printing Filament Enables Truly

Home > Applications

This 3D Printing Filament Enables Truly "Custom-Fit" Performance Footwear

February 21, 2026 Applications 10117

Siraya Tech’s New Roamr TPU Moves 3D Printed Footwear from Prototype to Performance

For a long time, 3D-printed footwear has hovered between "conceptual prototypes" and "avant-garde art," struggling to become truly comfortable and durable for everyday wear. The core challenge lies in the materials: traditional TPU is too heavy and slow to rebound, while high-rebound PEBA is often too stiff. The market urgently needs a material that combines extreme lightness, high rebound responsiveness, and a soft underfoot feel.

Now, this balance has been struck. The newly launched Roamr TPU Air HR (High Rebound) series from Siraya Tech is bringing 3D-printed footwear from the display stage into reality. By fusing active foaming technology with a proprietary high-rebound formula, it delivers three key breakthroughs:

Extreme Lightness: By adjusting the printing temperature, it can achieve up to 57% weight reduction, creating air-infused-like structures that significantly reduce foot fatigue.

High-Energy Rebound: With a 48-50% energy rebound rate, it bids farewell to the "mushy feel" of ordinary foaming materials, providing genuine dynamic energy feedback and a propulsive sensation.

Gradient Control: Simply by adjusting the printing temperature, a single printed part can achieve a Shore hardness gradient from 64A to 85A, allowing for easy design of integrated soles with a "firm forefoot with a soft heel."

The series offers two choices to precisely meet different needs:

Roamr 85A: Focuses on structure and durability. Suitable for outsoles and wear-resistant components, it provides stable support and high printing success rates.

Roamr 80A: Focuses on cushioning and tactile feel. Featuring a unique fabric-like texture, it is the ideal choice for insoles, liners, and midsoles in lifestyle footwear.

The arrival of the Roamr series marks the official entry of 3D-printed footwear into a new phase of high performance and wearability. Whether for functional sports equipment or personalized lifestyle shoes, designers now have a more powerful material tool at their disposal.