Developed by Master Builder Paul Waller, Fender® Custom Shop Troposphere™ Stratocaster® pickups are underwound, allowing more headroom with overdriven sounds and clean up for the most delicate tones to emerge. Troposphere™ pickups feature '50s-style formvar wire on the bridge pickup, a reverse-wound/reverse-polarity middle pickup, and '60s-style enamel wire on the neck pickup.