Particularly large people often have great difficulty in dangerous physical situations. Those who carry their weight well have the Brawny Edge. Those who don't handle it very well are Obese. A character cannot be both Brawny and Obese.

An Obese hero adds 1 to his Toughness, but his Pace is decreased by 1 and his running die is a d4. Obese characters may also have difficulty finding armor or clothing that fits, squeezing into tight spaces, or even riding in confined spaces such as coach airplane seats or compact cars.

Savage Worlds Deluxe Edition p. 32