Sleeve Kings 100x100mm sleeves are thick (60 micron), clear polypropylene sleeves designed for large board game cards (like Etherfields), offering 110 sleeves per pack (10% more than standard) at a budget-friendly price, aiming to be a cheaper, clearer, and thicker alternative to discontinued Fantasy Flight Games (FFG) sleeves. They are acid-free, PVC-free, and provide good protection, though some users note a slight "grabby" feel during shuffling, while others praise their quality and value for money.