Featured image of Siraya Tech’s New Roamr TPU Moves 3D Printed Footwear from Prototype to Performance Source: Siraya Tech
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Siraya Tech’s New Roamr TPU Moves 3D Printed Footwear from Prototype to Performance

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by Siraya Tech
Published Jan 22, 2026

The Roamr TPU Air HR (High Rebound) filament series is set to deliver dynamic power in a lightweight profile, bridging the gap between aesthetics and functionality.

For many, the dream of 3D printing a pair of shoes perfectly tailored to their feet has remained just that: a dream. In practice, the experience has often fallen short, leaving 3D printed footwear stuck between the realms of “avant-garde art” and “experimental prototypes”.

Solving the Core Pain Points of 3D Printed Footwear

The Roamr TPU Air HR (High Rebound) series aims to solve common 3D printed footwear pain points (Source: Siraya Tech)

Traditional TPU materials have long struggled with excessive weight, sluggish energy return, and material fatigue during prolonged use. Consequently, designers have been on a quest for a solution that delivers both a lightweight profile and the dynamic power feedback found in premium athletic footwear. While PEBA-based materials offer impressive rebound, they are often perceived as being too rigid for optimal user comfort.

The industry has been waiting for a true equilibrium: a material that combines the ultralight properties of foaming technology, the signature comfort of TPU, and the high-performance responsiveness of PEBA.

Today, Siraya Tech is proud to announce the launch of the Roamr TPU Air HR (High Rebound) series (85A and 80A). This series is more than just a material iteration; it is a system-level solution engineered to solve the footwear industry’s most persistent pain points. It marks the moment 3D printed footwear evolves from a gallery display piece into a functional, long-term wearable reality.

The Synergy of Active Foaming and High Rebound

At the heart of the Roamr series lies the fusion of innovative Active Foaming Technology and a proprietary High Rebound (HR) formula:

  • Revolutionary Weight Reduction: By adjusting printing temperatures, Roamr can achieve up to a 57% reduction in weight. This allows designers to create “air-infused” structures that significantly alleviate foot fatigue without compromising structural integrity.
  • A Leap in Physical Performance: Boasting a 48-50% rebound rate, the Roamr series stands apart from generic foaming filaments that often feel “soft but lifeless”. Roamr generates significant kinetic feedback under pressure, ensuring efficient energy recovery with every step.
  • Gradient Hardness Control: Users can manipulate surface hardness, ranging from 64A to 85A, within a single model simply by adjusting temperature settings in the slicer. This enables integrated designs featuring ultra-soft cushioning in the heel and rigid, firm support in the arch.

Dual-Grade Strategy: Roamr 85A vs. Roamr 80A

Roamr TPU Air HR 85A (Source: Siraya Tech)

Roamr 85A: The Foundation of Structure and Durability

  • Positioning: Structural support designed for high-stress and high-wear zones.
  • Highlights: As the “powerhouse” of the series, 85A focuses on outsoles, structural inserts, and abrasion-resistant components. It delivers industrial-grade compressive strength while retaining the flexible DNA of foaming TPU. Roamr 85A is engineered to provide stable support while eliminating the “toe-pinch” discomfort common in stiffer materials. Its superior printability ensures a high success rate even for large-scale, full-sole prints.

Roamr 80A: The Pinnacle of Cushioning and Comfort

Roamr TPU Air HR 80A (Source: Siraya Tech)
  • Positioning: Dynamic shock absorption with a focus on tactile gait feedback.
  • Highlights: Specifically tuned to absorb impact during heel strike, 80A emphasizes “anti-collapse” support, ensuring the material regains its shape rapidly. Featuring a unique fabric-like texture, printed parts move away from a “cheap plastic” feel toward a premium, bespoke aesthetic. It is the ideal choice for insoles, skin-contact liners, and midsoles for lifestyle footwear.

Discover the Roamr Series Today

Explore technical documentation or purchase the series through the following channels:

About Siraya Tech

Siraya Tech is a world-leading brand specializing in high-performance yet affordable 3D printing materials. From high-strength resins to industrial-grade filaments, Siraya Tech is committed to pushing the boundaries of material science to bring additive manufacturing into the era of true functional application.