Optimus svea ultra compact lightweight gasoline stoves product description the optimus svea cult stove of the climbing society is an ultra classic lightweight gasoline stove in solid brass it has been around for a century and still sets the standard for compact outdoor cooking equipment we doubt that any other outdoor stove has been field tested as much as the optimus svea widely used by climbers all over the world this stove is renowned for its performance at high altitudes the optimus