RDGA is DGA’s lightweight blend, made for discs around 150 grams. It isn’t recycled and it isn’t a sub-brand, despite the name.
Lightweight plastics are for lower arm speeds and headwind-free courses. The lighter disc is easier to get up to speed, which is the whole point, and it comes at the cost of some stability in wind.
Four DGA moulds are listed in it. If you don’t need the weight, the same moulds in ProLine or SP will hold up longer.