ALPINESTARS SP-1 v2 Vented Shoes - Black - US 12 / EU 47 2511318110047 classic or the Amendment that keeps

or the Amendment that keeps all others possible

Massive 12 inch design will bring out maximum punchy mid-bass

6 L Excursion (one way) 25mm Free Air Resonance 29Hz Mechanical Factor 4

Easily disassembled so you can change your voice coil on the go in minutes

ALPINESTARS SP-1 v2 Vented Shoes - Black - US 12 / EU 47 2511318110047 classic or the Amendment that keepsMicrofiber upper Perforated microfiber panels on lateral and medial quarter areas plus medial side perforation zone for enhanced airflow Tongue is made with breathable mesh to improve airflow Rear accordion panel is lightweight padded material Speed lacing system derived from Alpinestars MotoGP technology for a quick, precise, secure closure Ankle opening closure system using a hook and loop strap with debossed Alpinestars logo Foam backed double