YOUSU 3D Printer Filament Bundle Glow in the Dark TPU 95A - Flexible

In this review the YOUSU 3D Printer Filament Bundle is evaluated for makers who need flexible, glow in the dark TPU for functional prints and creative projects. The single biggest reason to consider this filament is its combination of a high Shore hardness at 95A with phosphorescent additives, which delivers a durable, slightly elastic print that also charges to glow after exposure to bright light or UV. For hobbyists and small-scale fabricators wanting glow effects without sacrificing toughness, this bundle is compelling.

Key Features

• Glow in the Dark: Contains phosphorescent material so printed parts absorb light and glow more strongly after exposure to sunlight or a UV source within about 30 minutes.
• Shore Hardness 95A: The TPU balances flexibility and resilience, stretching up to three times its length for durable, elastic prints that resist tearing.
• Four Color Pack: Includes green, blue, yellow and purple filaments so users can mix glow tones or create multicolor projects without buying separate spools.
• Wear and Bending Resistance: The material resists abrasion and repeated bending, making it suitable for phone cases, wearables and soft mechanical parts.
• Printer Settings Guidance: Recommended print temperature 190-210C, bed 30-60C and print speed 30-90mm/s to help achieve consistent extrusion with flexible filament.
• Compatibility and Support: Works with most FDM printers that handle flexible filaments and the seller offers 24-hour customer service for quality questions.

Who It's For

This filament bundle is best for hobbyists, cosplay makers, and small-scale product designers who need flexible parts that glow for safety or decorative features, such as phone cases, wristbands, soft bumpers, or fishing lures. Users who like experimenting with color effects will appreciate the four distinct glow colors included.

Those who should look elsewhere include users who require a fully rigid material, or who expect intense luminous duration without recharging under bright or UV light; glow strength varies by charge and purple prints will glow dark blue rather than purple. Also, printers that cannot reliably handle flexible filament may experience feeding or tangling issues even with proper care.

Pros & Cons

Pros

• Good balance of flexibility and toughness thanks to the 95A Shore hardness for durable, stretchable parts.
• Visible glow effect after charging under bright or UV light that adds a functional or aesthetic benefit.
• Includes four colors in one pack for varied projects without extra purchases.
• Helpful recommended settings reduce trial-and-error for first prints.

Cons

• Glow intensity and color consistency are mixed in user reports, and results depend heavily on the light source used to charge the filament.
• Flexible filaments can be trickier to feed on some printers and require careful handling to avoid tangles.

Specifications

Material	TPU (phosphorescent)
Diameter	1.75mm
Shore Hardness	95A
Pack Contents	4 x 250g spools (green, blue, yellow, purple)
Recommended Print Temp	190-210C
Recommended Bed Temp	30-60C
Print Speed	30-90mm/s

Our Verdict

The YOUSU glow in the dark TPU bundle is a practical, good-value option for makers who want resilient, flexible prints with a glow effect and the convenience of four colors in one purchase. It performs well at the recommended lower extrusion temperatures and produces clean prints on compatible FDM machines; if you need rigid ABS-like parts or consistent intense luminosity without strong charging light, consider a different material.

Frequently Asked Questions

Will the purple filament glow purple?
The purple filament will glow dark blue in the dark; glow color varies by pigment and charging light.

How long do prints stay glowing?
Glow duration depends on exposure; bright sunlight or a UV source produces the strongest, longest-lasting glow after about 30 minutes of charging.

Can I use this on my FDM printer?
Yes, it is compatible with most FDM printers that support flexible filaments when you follow the recommended temperature and speed settings and manage filament feeding carefully.