3x5 index cards, 100lb thick, blank unruled (1000 pcs) by Norstrom Dumati vs Roaring Spring 4x6 index cards, bulk 3600 (36 packs of 100)

Overall winner: 3x5 index cards, 100lb thick, blank unruled (1000 pcs) by Norstrom Dumati

Key Differences

Norstrom Dumati (A) offers 1,000 thick 3x5 cards on 14pt/100lb archival stock with an unruled smooth surface, making them sturdier and better for long-term or heavy handling. Roaring Spring (B) provides 3,600 larger 4x6 cards with blue ruled fronts and red headers for organized note-taking, but some customers report the paper is very thin and mixed in sturdiness

3x5 index cards, 100lb thick, blank unruled (1000 pcs) by Norstrom Dumati

3x5 index cards, 100lb thick, blank unruled (1000 pcs) by Norstrom Dumati

Norstrom Dumati • ★ 4.1/5 • Mid-Range

Blank 3" x 5" index cards, 100lb 14pt stock with an uncoated smooth surface. Thick, durable cardstock suitable for flashcards and school work, with minimal ink bleed-through

Pros

  • 100lb 14pt thick cardstock
  • uncoated smooth surface
  • absorbs gel-ballpoint-pen ink, marker, inkjet inks
  • sturdy and durable for bags/bundles

Cons

  • blank, unruled surface may require writing guidance
  • only 3x5 size
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Roaring Spring 4x6 index cards, bulk 3600 (36 packs of 100)

Roaring Spring 4x6 index cards, bulk 3600 (36 packs of 100)

ROARING SPRING • ★ 3.9/5 • Mid-Range

4"x6" index cards in a 3,600-card bulk case. One side ruled with blue lines and a red header; back is blank. 100# white index stock for writing clarity. Customers value size and writing space for notes and lists

Pros

  • large 4"x6" format for more writing space
  • ruled front with top header line for organization
  • bulk case of 3,600 cards
  • blank back for additional notes or sketches

Cons

  • paper thickness described as very thin by some customers
  • mixed feedback on sturdiness
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Head-to-Head

CriteriaWinner
Price Norstrom Dumati
Durability Norstrom Dumati
Versatility ROARING SPRING
User Reviews Norstrom Dumati