The Si-18 Rannell is an early 2000's heritage bring-back from the archives of K-Swiss. Originally a cross training shoe with design elements from the Si-18 Tennis Shoes shoe, the Si-18 Rannell was adopted by the free running and parkour community as its go to silhouette. Signature K-Swiss D-rings and molded TPU eyelets keep the fit secure. The Si-18 Rannell sits atop an EVA midsole with cushioned Si-18 TPU gel insert on the lateral side.