The 2 primary dynamics of this midsole are Geometry and and the midsole compound.
Geometry: The geometry is rockered in front and in the rear of the shoe and provides a very smooth and effort assisted experience underfoot. The base also feels a bit wider than the standard shoe, providing a more stable experience underfoot. It is probably one of, if not the, best geometries underfoot I have experienced.
Midsole material: The TPEE provides an energetic and fun response, which greatly increases with more force put into the shoe during the gait cycle. In my experience, I get along very well with TPEE midsoles and this is no exception.
A secondary dynamic, but also an important one, is the lightness of this shoe. It is lighter than the Puma Deviate Pure recently reviewed and has more foam underfoot.
The combination of the above dynamics results in one of the most versatile and enjoyable rides since I have been running. I set my PR in the mile in these shoes during the track workout. The shoe was brilliant in my 2-15 mile runs. I am able to transition to easy pace, steady pace, up tempo etc. with ease. I would honestly probably choose this shoe for a marathon if I was running one "today", as someone who doesn't use plated shoes at this point for marathons.
This is a shoe that has a legit fun factor for me.