Detroit Lions Official Size Wilson American Football. The perfect ornament or toy for a Lions fan! --- Official size American football. Well-adherent synthetic exterior. Recommended for collectors and recreational sports, on any ground, in any weather. Its material is PVC. Instructions for use: the ball must be inflated to the pressure indicated on it (lbs = 0.063 Bar). Protect from permanently wet, muddy, snowy environments, DO NOT dry with a radiant heat source (radiator, hair dryer).