UK-based retailer size? will be releasing the adidas Originals Centaur (CNTR) "Rayleigh" as part of an exclusive Select Collection from the Three Stripes. The two-sneaker offering, nicknamed after British physicist Lord Rayleigh, is inspired by the change in color of the sky—blue during daytime to pink at sunset.

One sneaker is equipped with a black suede and breathable mesh upper with pink underlays. The other CNTR is predominantly grey with pink accents.

Both sneakers wil be avialable this Friday, May 30, in-store at all size? locations and online. Retail price is 90 British Pounds, or about $150.

[via size?]