Houston Texans Authentic SpeedFlex Helmet. Based on Riddell's most popular on-field design, this collectible SpeedFlex Authentic football helmet is made specifically for fans of the Houston Texans. At approx. 11 in. tall, this authentic size display helmet is perfect for all football fans and great for autographs. The helmet features a large size SpeedFlex shell and padding, the SF2BD-SW-SP face mask, a 4-point chinstrap with Cam-Loc attachment, Quick-Release facemask attachment system, and official paint and decals. It is not to be used for play. The perfect collectible or gift!