Common sizes listed include 3 × 5 in. index cards, 3.5 × 5 in. cards, 4 × 6 in. cards, and smaller note cards around 3.86 × 3.55 in. (often used for classroom packs or valentines).
Pack counts vary widely: small sets of about 10 cards, classroom or party packs around 24, assorted boxes of 48, common 100-count packs, and larger bulk sets such as 144 cards.
Listings show a range from lighter uncoated index cards (for example 72 lb index stock) up to heavier cardstock (around 220–250 gsm). Finishes vary: some folded cards have a matte finish, while many index cards are uncoated.
Options include one-side ruled index cards (ruled front, plain back), fully blank cards, college-ruled 4 × 6 index cards, and folded greeting cards available as horizontal or vertical folds with blank interiors.
Common extras include matching envelopes and a storage/card box; some bulk or classroom packs also include small extras like bundled erasers.
Reviews commonly praise attractive appearance and note a premium or cardstock feel, with several comments calling out good paper quality and a solid, non-cheap feel.
