Foaming TPU Filament

About

Foaming TPU filament from Siraya gives you control over weight, softness, and performance in one flexible material. Our collection includes LW TPU filament and active foaming filament designed for makers who want lighter parts without giving up strength. You can tune density and hardness by adjusting temperature. That means one spool can handle multiple use cases. Ideal for wearables, sports gear, drone parts, grips, and functional prototypes. If you need reduced weight TPU that still holds up under stress, this collection is built for that. Options That Match Real Needs Different projects need different feel and weight. Tunable hardness from soft to firm Expandable TPU that lowers part density Up to 50% weight reduction Low-density TPU for moving assemblies Soft 3D printing filament for skin contact One Spool, Adjustable Results Print cooler for denser, firmer parts. Raise temperature to activate more foaming for lighter, softer results. This flexibility saves time and reduces the need to stock multiple materials. Consistent Quality That Delivers Better Results Lightweight should still mean durable. Strong rebound and fatigue resistance Impact-absorbing TPU structure Resists wear from bending and flexing Stable layer bonding during foaming Clean, soft-touch surface finish This foaming flexible material keeps elasticity while cutting mass. Parts stay reliable for daily use, not just display. Works with What You Already Use No special setup required. Compatible with most FDM 3D printers Standard 1.75mm filament format Smooth feeding to reduce jams Predictable expansion when tuned properly Easy to dial in with common slicers Compared to many lightweight TPU filament options, this active foaming filament maintains stable extrusion before expansion. That helps improve surface consistency and print success. Built for Real-World Use Designed for parts that move and absorb impact. Insoles and comfort pads Wearables and straps Protective cases and grips RC and drone compone