iFixit Anti-Static Wrist Strap

Prevent electrostatic damage'
• Helps protect your electronics from accidental electrostatic discharge (ESD) damage during repairs.
• Ground yourself while working on sensitive electronics to prevent static charge build-up.
• Custom manufactured by iFixit for "European" sized wrists. Most anti-static wrist straps are made for use in manufacturing throughout Asia, and do not pass our ergonomics test, if they fit at all!

"Rapid static dissipation by a wrist strap ground is required to prevent voltage spikes. Simple movements such as lifting one foot off the floor or raising one arm from a conductive table mat may change body capacitance by as much as 10% to 30%. Uncontrolled, the capacitively created voltage may reach several hundred volts or more."
-3M Technical Brief