Are SUIN fineliners waterproof?

Yes. The listing describes waterproof, archival pigment ink.

What are they good for?

Technical drawing, anime sketching, outlining and journaling.

Can I color over them with markers?

Yes, once the ink is fully dry.

Budget multiliner set

SUIN

SUIN Fineliner Pens (8-Pack)

Eight black waterproof fineliners with assorted micro tips and a flexible brush tip. The pigment ink is low-odor and conforms to ASTM D-4236.

Best for: Beginners who want waterproof liners for sketching and journaling at a low price

Pens: 8
Tips: Assorted micro plus brush
Ink: Pigment, waterproof
Safety: ASTM D-4236

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What we like

Waterproof, fade-resistant pigment ink
Micro tips plus a brush tip
Low-odor, ASTM D-4236

Keep in mind

The listing does not give exact tip sizes
Black only

Key features

From the manufacturer's Amazon listing.

ULTIMATE DRAFTING PEN EXPERIENCE: Featuring precise micro tips, waterproof archival ink, smooth flow, no bleed, and fade-resistant properties. This set is specifically designed for professional artists, illustrators, architects,...
VIBRANT & DURABLE INK: High-quality pigment ink ensures consistent, skip-free pen performance. With assorted tip sizes including a flexible brush tip, these multiliners are perfect for both intricate, detailed work and expressive...
SAFE FOR PROFESSIONAL STUDIOS: Formulated with reliable, non-toxic, and low-odor ink that conforms to strict ASTM D-4236 standards. This makes our fineliner set the ideal and comfortable choice for adult art studios, corporate...
VERSATILE MULTILINER USE: Whether for technical drawing, anime sketching, outlining, or architectural drafting, these black ink pens deliver professional-grade, smudge-free results on all standard drawing paper and sketchpads.
PERFECT CREATIVE GIFT: We stand by our premium quality. Beautifully packaged, this comprehensive drawing pen set makes an excellent present for adult coloring book enthusiasts, professional illustrators, and design professionals.

Frequently asked questions about the SUIN Fineliner Pens (8-Pack)

Are SUIN fineliners waterproof?: Yes. The listing describes waterproof, archival pigment ink.
What are they good for?: Technical drawing, anime sketching, outlining and journaling.
Can I color over them with markers?: Yes, once the ink is fully dry.