Polar is AGL’s grippy premium blend. Like the rest of the line it comes out of Innova’s factory, on a Star regrind, so it behaves like Star: opaque, tacky, a little more give than Alpine.
That makes it the wet-weather and cold-morning choice in the AGL range. It keeps some flex when the temperature drops and it holds in the hand when the disc is damp. Durability is still premium, just a step below the clear blend.
It beats in slowly, so don’t buy it hoping the flight will move. Only one AGL mould is currently listed in it.