# item.guide
Side-by-Side Comparison Gaming Supplies

Card Sleeves vs. Polyhedral RPG Dice

Comparing 2 standards across 21 specifications. 21 key differences identified.

Comparing:
Card Sleeves
Polyhedral RPG Dice

Card sleeves are protective polymer covers manufactured in standardized millimeter dimensions to fit trading card games (TCGs) and board games. The universal matrix spans Standard Size (66×91 mm for MTG, Pokémon, Lorcana), Small/Japanese Size (62×89 mm for Yu-Gi-Oh, Cardfight Vanguard), Perfect Fit/Inner Sleeves, and Tarot Sleeves, measured in micron thickness grades (50 to 120 µm).

View full Card Sleeves spec sheet →

Polyhedral dice are standardized 7-die sets used in tabletop role-playing games (TTRPGs) including Dungeons & Dragons and Pathfinder. A standard set consists of D4 (tetrahedron), D6 (cube), D8 (octahedron), D10 (pentagonal trapezohedron), D% (percentile tens), D12 (dodecahedron), and D20 (icosahedron), manufactured in standard 16 mm to 22 mm millimeter heights based on Platonic solids.

View full Polyhedral RPG Dice spec sheet →

Specification Comparison Table

21 Parameters
Parameter / Spec
Standard Size (MTG / Pokémon)
66 × 91 mm (fits 63.5 × 88.9 mm / 2.5 × 3.5" cards)
Small / Japanese Size (Yu-Gi-Oh)
62 × 89 mm (fits 59 × 86 mm cards)
Standard Inner (Perfect Fit)
64 × 89 mm (snug inner sleeve for double-sleeving)
Japanese Inner (Perfect Fit)
60 × 87 mm (snug inner for Japanese cards)
Tarot Sleeve Size
73 × 122 mm (fits 70 × 120 / 70 × 121 mm cards)
Mini-European Size
46 × 71 mm (fits 44 × 68 mm board game cards)
Mini-American Size
43 × 65 mm (fits 41 × 63 mm cards)
Penny Sleeve Thickness
40 to 50 microns (µm) / 1.5 to 2.0 mil
Standard Gaming Sleeve Thickness
100 to 120 microns (µm) / 4.0 to 4.7 mil (Dragon Shield/Katana)
Polymer Materials
Polypropylene (PP), Acid-Free, No PVC
Standard Set Composition
7 Dice (D4, D6, D8, D10, D% tens, D12, D20)
D4 Shape & Height
Tetrahedron (4 triangular faces) 16 to 18 mm (vertex to base)
D6 Shape & Height
Cube (6 square faces) 16 mm (0.63 inches face-to-face)
D8 Shape & Height
Octahedron (8 triangular faces) 15 to 16 mm (face-to-face)
D10 / D% Shape & Height
Pentagonal Trapezohedron (10 kite faces) 16 mm (vertex-to-vertex)
D12 Shape & Height
Dodecahedron (12 pentagonal faces) 18 mm (face-to-face)
D20 Shape & Height
Icosahedron (20 triangular faces) 20 to 22 mm (face-to-face)
Opposite Faces Sum (D6)
7 (1+6, 2+5, 3+4)
Opposite Faces Sum (D8)
9 (1+8, 2+7, etc.)
Opposite Faces Sum (D12)
13 (1+12, 2+11, etc.)
Opposite Faces Sum (D20)
21 (1+20, 2+19, etc.)