Flexible Performance Meets Glow-in-the-Dark Creativity

Take your flexible 3D printing projects to the next level with Glow in the Dark Green S-Flex 90A Filament from Spectrum Smart Materials. Designed for users who want both functionality and visual impact, this TPU-based filament combines high elasticity, durability, and a striking glow effect after exposure to light.

With a Shore hardness of 90A, S-Flex offers the perfect balance between flexibility and structural integrity—ideal for both practical parts and eye-catching designs.

Key Features & Benefits

• Glow-in-the-dark effect
  Emits a bright green glow after light exposure—perfect for creative, safety, and decorative prints
• Flexible yet durable (90A TPU)
  Maintains elasticity while offering strong resistance to wear, tearing, and impact
• Excellent layer adhesion
  Produces consistent, reliable prints with minimal delamination
• User-friendly flexible filament
  Easier to print than softer TPU variants, especially on well-tuned Bowden and direct drive systems
• High abrasion resistance
  Ideal for parts exposed to friction or repeated movement
• Low warping and good bed adhesion
  Helps ensure successful prints even for complex flexible geometries

Typical Applications

This filament is ideal for both functional and creative use cases:

• Wearable items (bracelets, watch bands, straps)
• Protective covers and shock-absorbing parts
• Gaskets, seals, and flexible connectors
• Glow-in-the-dark safety markers or signage
• Artistic and decorative prints with visual impact
• Toys, props, and cosplay accessories

Material & Compatibility

S-Flex 90A is a TPU-based filament engineered for compatibility with most FDM/FFF 3D printers that support flexible materials.

Printing considerations:

• Works best with direct drive extruders, but can be used on tuned Bowden setups
• Requires moderate print speeds for optimal results
• Benefits from good first layer calibration for strong adhesion
• Compatible with textured, PEI, or glass build surfaces

General characteristics:

• Shore hardness: 90A (medium flexibility)
• Strong interlayer bonding
• Smooth surface finish with slight rubber-like feel
• Glow effect activated by UV or strong light exposure

Why Users Choose S-Flex 90A Glow Filament

• Reliable balance of flexibility and printability
• Unique glow-in-the-dark aesthetic without sacrificing performance
• Consistent diameter and high manufacturing quality
• Suitable for both beginners exploring flexible filaments and experienced users

Compared to softer TPU filaments, S-Flex 90A is easier to control, making it a go-to choice for users who want predictable results without compromising flexibility.

Bring Your Prints to Life

Whether you're creating functional flexible parts or visually striking glow-in-the-dark designs, this filament delivers performance, durability, and creativity in one spool. Add a new dimension to your prints with S-Flex 90A today.