Sam Lubell, an architecture writer, explained in The Times:
“In classic SoCal fashion, the stadium, its edges open to the outdoors along the sides, blurs the line between interior and exterior, inviting visitors, and views, inside. It pulls in ocean breezes through its aerodynamic shape, its permeable flanks, the lifting of its seating bowl above the ground-level concourse and massive (60 feet by 60 feet) adjustable openings in its roof that can slide like sunroofs on cars. These openings can ‘tune’ the wind flow, according to HKS, which designed recent stadiums for the Minnesota Vikings, Indianapolis Colts and Dallas Cowboys.
“The roof, which covers and unifies the stadium bowl, plaza and adjacent arena, is clad in ethylene tetrafluoroethylene, or ETFE, a tough, translucent plastic that, thanks to its dotted frit pattern, shades fans from about half of the sun’s heat. (If you’ve roasted at the Coliseum or at Dodger Stadium, you will appreciate that.) The ETFE also will allow concerts, community gatherings, e-sports, the Super Bowl and the Olympics to carry on in the rare case of rain.”