While spinning PokeStops, I was able to get double loot (7-8 items) and double XP (100 XP) twice. However, I do not understand whether I did something special for this and I cannot find any information on this matter.
Does anyone know how to get these double loot and XP from spinning a PokeStop?
Update: faced this again. Images are below. This was the first pokestop for a long time.