Back in the early '80s the "Onitsuka X-Caliber" was launched as the "Asics X-Caliber" — since then it's had a name change and redesign. Today we take a look at the collaboration between Onitsuka Tiger and Berlin-based Koi Klub. Arriving in two unique colorways, they feature a raw denim base that is complemented by hints of suede on the toe cap and heel and two-toned laces. The color treatment and use of materials on the "X-Caliber" was no accident as they were purposely chosen to not match. They are available now at SNS.