A man's wallet should be functional and fashionable. It's an extension of your personality, so think twice before whipping out that ratty, bursting-at-the-seams monstrosity that's held together with rubber bands. The bifold and trifold are two common wallet styles for men, and you can fit your essentials in either one without straining its seams. Your lifestyle and preferences will dictate which style is perfect for you.

A bifold wallet is rectangular and folds in half. It usually features one long open pocket for currency and several slots -- either vertical or horizontal -- for credit cards, ID cards and receipts. Some styles even have coin purses attached. They are made mostly of leather but can also be made of vegan materials or canvas. Wallets -- regardless of how many folds they have -- usually have no clasps, but sport versions made of canvas are available with hook-and-loop or zipper closures.

A trifold wallet is rectangular and features two flaps that fold to the center, each section (two flaps and the center) making up 1/3 of the wallet's length. As with the bifold style, the trifold features one long open pocket for currency and several slots -- in this case, only vertical -- for credit cards, ID cards and receipts; and are made of leather, vegan fabrics or canvas. Trifold wallets are bulkier and heavier than bifolds because they offer more card and cash capacity.

What wallet you choose is dependent on your lifestyle and personal preferences. Trifolds give you more room but are bulky and heavy. Carrying a trifold in a front pocket not only looks sloppy, but is akin to carrying a hockey puck that will dig into your leg and hip when you sit down. Bifolds offer less capacity but are thinner and can be carried in either the front or back pockets and mold to the wearer's body. If carried in front, they'll likely bend and not cause discomfort while sitting.

Regardless of the type of wallet you choose, some essentials should always be on hand. Always carry cash, even if you have credit cards. A driver’s license or state ID card is sufficient, unless you need a second ID for school or work. Carry only one or two debit or credit cards and a few business cards. Leave everything else at home -- social security cards, passports, coins, receipts and the like.