Tricky Toes is a gear perk that lets you disable tripwires by stepping on them. Instead of setting off the trap, you defuse it, which makes mined areas much safer on foot.
Walking into a tripwire disarms it instead of triggering it. You do not need to spot every wire before moving forward.
Wear the Impact Boots in the feet slot. Gear perks are fixed to the piece of clothing that carries them, so you get this one by wearing that piece, not by unlocking it in a menu.
Handy if tripwires catch you a lot. Otherwise a speed or noise perk is a better use of the feet slot.