It's got a secret pocket to hide large bils, reciepts and lists. 2 card holders and a change pocket that doesn't let change spill out by mistake.
Build a tri-fold wallet that hold bills, change, and cards out of a single FedEx small express tyvek envelope. 5 cuts, 1 staple, and no tape. Tri fold wallets are compact, so it doesn't look like your ass is lopsided and it's thin enough to stick in your front pocket.