Traditional billfolds, whether bifold or trifold, carry timeless appeal. A high-quality leather wallet is a treasure. Billfolds come in two main variations: bifolds and trifolds. Trifold leather wallets are folded twice, dividing the wallet into thirds. Bifold leather wallets fold in half, dividing the wallet into two sections. Because of the extra fold, trifolds tend to take up more space in a pocket, but depending on the design (and how it’s filled), that isn’t always the case. Remember though, bifolds and trifolds are both prone to overstuffing, so be on guard and keep your wallet tidy.