Formula 1 returns to the test arena on Tuesday for the start of the first in-season testing, a two-day outing at the Sakhir circuit.
Mercedes have opted to go with their full line-up with Lewis Hamilton in action on Day One before he hands the W08 over to Valtteri Bottas for the second and final day.
Haas and Sauber will also use their race drivers while championship leaders Ferrari have given one driver, Kimi Raikkonen, the week off.
Sebastian Vettel will test on Wednesday with third driver Antonio Giovinazzi behind the wheel of the SF70H on Day One.
Red Bull will run Daniel Ricciardo on Tuesday and Pierre Gasly the following day while McLaren have put Oliver Turvey in the car on Day One before Stoffel Vandoorne returns to the cockpit for the second day.
The full line-up