They say a good man is hard to find. But here’s the silver lining on that theory: once discovered, a good guy is usually pretty easy to keep happy. To keep those happy guy vibes flowing this Valentine’s Day, we offer up a surefire gift-giving strategy for pleasing dudes: just give him something he can wear anywhere that can’t be found everywhere. Three examples:

Beloved by bike messengers, surfers, hipsters, hikers and Muni-riding men about town alike, a Roll-Top Pack ($200) from San Francisco’s Chrome Bags is sturdy enough for the truly hardcore, yet versatile enough to go from weekday lunch meeting to weekend wine tasting. With its streamlined exterior and slick, citified pockets, you’d never guess the main roll-top chamber is completely watertight when fully sealed. Available at Chrome Bags, 580 4th St., 415-503-1221.

If he’s a guy, then it follows that he could probably use a new pair of underwear. Upgrade from the same ‘ole skivvies with a soft, 160-thread-count cotton pair ($76) from Sausalito-based Birds Boxers. Available in a classic fit with front tab closure and roomy seat and custom fit with an old-school flat yoke front and tailored styling, each features mother of pearl buttons and a wide hem to prevent rolling. Available at Elizabeth Charles, 2056 Fillmore St., 415-440-2100.

Simultaneously remind him that you’re there whenever he needs a safe place to land and replace one of the ratty tees clogging his dresser drawers with the Men’s Parachute Tee by local label Turk + Taylor. Created for the San Francisco Museum of Modern Art, the limited edition tees are hand-numbered and printed on 100 percent organic cotton. Available at SFMOMA MuseumStore, 151 Third St., 415-357-4035.