The Secrid Optical Miniwallet in grey is small in size but surprisingly large in storage capacity. It combines the best of both worlds, holding banknotes, receipts, and cards in the exterior, while the aluminium Cardprotector allows you to slide out cards with one simple motion and protects them from bending, breaking, and unwanted wireless communication. It can hold a maximum of 4 embossed or 6 flat plastic cards, as well as up to 4 extra cards in the exterior wrap, and business cards and receipts.