These picks are very durable and hard (unflexible) thanks to the Ultex material, that also makes them a bit more brighter sounding compared to Tortex which is much warmer, this is great for keeping detail as you go up in thickness.
Grip is almost equivalent to Jazz III as they use the same raised text but I feel it's a bit better on these picks thanks to their satin texture.
They are of the same size as Jazz XL but with a touch wider tapering towards the tip.