Around nearly since Optimus was founded more than a century ago, the Svea stove has been a cult classic for light-and-fast climbers’ and alpinists’ gear bags for decades. Its simple, design in nearly bulletproof solid brass keeps it rugged too: The lid doubles as your cook pot. No loose parts to misplace. And the handle serves as a maintenance tool. A built-in cleaning needle helps you keep the flame burning and that pot of nourishment simmering. The exacting flame control lets you unpack your kit while the soup simmers, but you can get it boiling hard quickly when you can’t wait. Great for solos, high-altitude adventures (uses white gas for best efficiency), or anytime super light is super right.