New-for-2016 rules dictate that drivers can make a single one-off helmet design change during the season, with this being Hamilton's only change.
Hamilton described the helmet as "inspired by my idol, Ayrton Senna, and Brazil.”
"I love it here, such a special place to race," he said.
Hamilton has raced Senna-inspired helmet designs in the past, including at the Brazilian Grand Prix last year (pictured above).
Bahrain International Circuit - Winter testing