Adidas running | MEET US IN THE HOT PURSUIT OF INCREDIBLE ENERGY RETURN | ULTRABOOST 21
Woman 1: The first thing it's gotta do,is to make you want to run.
Man 1: If we talk about Ultraboost, it's always about energy and energy return.
Alice Alfaroli: We really start this project on having one single vision together.
Sam Forester: Definitely it wasn¡¯t the job of one designer. It was a huge collection of team members looking at weight,looking at cushioning,and looking at stiffness.Yeah this triangle was a good one to get our heads around.And when you increase one variable, you often impact another in a different way,so a bit of a crazy Rubik¡¯s cube which we had to figure out.
Woman 2: We had so many different great ideasand many different perspectives as well.
Sam Forester: And sometimes when you go extreme on a Boost, what does that then do for performance?What does it do for the gait cycle?
Woman 3: We all agreed for the need of more Boost.
Woman 1: We redesigned the midsole from the ground up.
Sam Forester:Probably the biggest innovation or explorationwas on the LEP torsion system.
Woman 4: A revolution of the torsion spring that we had in previous generations.
UlisseTanzini: We also call it sometimes the ¡®Little Extra Push¡¯.
Alice Alfaroli:We started from just like the knit.So concentrating on the new structure, how to highlight it and energize it.
Woman 2: Using a Primeknit+ solution which is much more dense and much more smooth in its surfaceand much more precise.
UlisseTanzini: OK do you want me to be honest? Or do you want me to¡¦I¡¯ll give you an honest answer and then we¡¯ll see if we use it. We have never used Boost in this wayand we have never sculpted it that dramatically before.
Sam Forester:When we put a shoe in the lab and we test the shoe, its where you see whether our decisionsand our, I guess, creative energy has gone in the right direction.
Woman 2: We had these hundreds of hours of sketchingand then there was only one single sketchthat took basically two minutesand that was the key sketch in the end.
Woman1: Fine-tuning the weight, cushioning and stiffnessmeant we would unlock more possibilities for greater energy return which felt truly amazing.