The SP Shoe is FIA homologated with an evolved design which includes: Alpinestars? newly developed asymmetric lacing system for supportive closure and customized fit plus laser perforations for breathability which are incorporated into an anatomically profiled shoe that also features Alpinestars exclusive ultra-thin Formula 1 specification sole with special line textured grip and improved pedal feel.
Specifications
FIA Rating: 8856/2000
SFI Rating: SFI 3.3
Material: Suede outer with Para-aramidic fiber tubular lining
Primary Use: Auto Racing
Size US: 5-13 (excluding 5.5, 6.5, 11.5, 12.5)
Size EURO: 37-47 (excluding 37.5, 38.5, 45, 46)
Sizing Chart
Driving and racing shoes are usually slightly narrower than athletic shoes. Most drivers like their shoes to fit as snugly as possible to increase pedal feel. If you are between sizes and like your shoes to fit snugly, choose the smaller size. If you are between sizes and have a wide foot or do not like your shoes to fit tight, opt for the larger size.