Featherweight
From NsdWiki
Expoint Cost: 3
You are considerably lighter and more compact than you appear, and your weight is evenly distributed. You find climbing easy and gain a +2 bonus to Climb checks. Additionally, any attempts by your allies to lift, carry, or toss you give them a +2 bonus to their Lift checks.
Incompatible with
Anchor, Dead Weight, Massive, and Obese (you might be lighter than you look, but you’re still hefty!)