You can walk on walls and cling to ceilings like a spider. You have tiny barbs on your hands and feet to facilitate climbing, and your fingers and toes secrete a transparent adhesive that lets you cling to smooth surfaces.
Benefit
As long as your hands and feet are uncovered, you can climb perfectly smooth, flat, vertical surfaces (DC 25). In addition, you gain a +4 mutation bonus on all Climb checks. Wearing gloves or footwear reduces the bonus to +2, and wearing both gloves and footwear negates the bonus entirely.
You also gain a +4 mutation bonus on Balance checks when moving a cross a slippery surface. Wearing any kind of footwear negates this bonus.