I love the firm feel of this shoe and the material for the upper. I loved the original SL so much but didn't love the material for the shoe because it felt a little bulky (but not heavy). also, the original shoe took a few rings to feel real effects of the foam. but this version seemed to be ruined right out of the box.

I bought these to use when I go to the Gym 6 days per week. These are such a game changer when I do my run on the treadmill, compared to my previous trainers. They have amazing stability and comfort and really light.