Size and fit

The Adidas Crazy BYW II is available in men’s sizing. It has a distinctive lacing system that offers a secure lockdown. The upper is made of knit material that provides foot breathability.

Adidas Crazy BYW II Style

The Adidas Crazy BYW II exhibits an exclusive design that gives off a futuristic vibe. With its unique appeal, it also delivers the ability to function as a finish for a stylish street-inspired look. The low-top sneaker exhibits a design that blends the past and the future well, giving off a rather on-trend appeal.

Notable Features

Following the footsteps of its predecessors, the Adidas Crazy BYW II also features the signature podular sole unit which is combined with the brand’s Boost technology. The distinguishable iteration made on the design of the sneaker was the emphasized arch support clip that takes the most of the midsole to its lateral mid-foot section. 

This low-top silhouette’s upper construction is covered in Primeknit material which is also accompanied with mesh to give off proper ventilation. A bit of suede graces the lateral heel of the shoe and on its medial side arch. The Adidas Crazy BYW II comes in a white/black/purple colorway as well as white and black combination, and the latest one to be introduced is the combined red and white.

Adidas Crazy BYW II History

The Feet You Wear (FYW) technology was introduced by the Adidas brand in 1996. The purpose of this technology was for the shoe to follow the principle of the natural movement of the foot like it was some sort of an extension. Frampton Ellis was the one behind the development of the said innovation. He selected for the FYW to be licensed for the brand to use it despite him working outside of Adidas.

The shoes designed by Ellis feature a “wider and lower-to-ground” base as well as curves that go from its outsole up to its midsole. The design was to maximize the foot’s lateral movement’s stability. In the year 1997, the technology was featured in Kobe Bryant’s first signature shoe under Adidas.

After five years, Ellis and Adidas encountered problems on the licensing of the FYW which brought it to its end. But during that brief time, the FYW technology was utilized in developing remarkable silhouettes which landed their spots in the retro models.

When the year 2018 came, the Adidas Crazy Boost You Wear (BYW) was introduced, and which was inspired by the FYW technology. Also in the same year, a follow-up release was made by the brand for the Adidas Crazy BYW II which retains the original design yet offers an updated, stylish look with its low-top profile and notable design iterations.

Additional Info

  • “BYW” in Adidas Crazy BYW II means “Boost You Wear.”
  • The shoe features the TPU overlay that also serves as a stylish accent for its design.
  • A heel pull tab can be observed which displays the 3-Stripes.
  • It is also called the Adidas Crazy BYW Lvl 2 by some retailers.


How Adidas Crazy BYW II ranks compared to all other shoes
Bottom 43% sneakers
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Bottom 39% Adidas sneakers
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Bottom 42% low sneakers
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The current trend of Adidas Crazy BYW II.
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Danny McLoughlin
Danny McLoughlin

Danny is a sports nut with a particular interest in football and running. He loves to watch sports as much as he loves to play. Danny was lead researcher on RunRepeat and The PFA’s report into Racial Bias in Football Commentary. His football and running research has been featured in The Guardian, BBC, New York Times and Washington Post.