Flexible. Belters can contort themselves into unusual positions and fit into the smallest spaces. When restrained by somebody not trained in Belter restraint techniques, they can escape in one minute. If the captor is aware of this they can make an opposed LOG v AGI check to nullify this ability.
Hold breath. A Belter can hold their breath for 10 minutes before having to form any kind of suffocation dice pool. This enables them to move in vacuums and ignore noxious fumes.