ALPINESTARS Supertech R Boots - Black - US 8 / EU 42 2220021-10-42 Purpose Mid-Layer Jacket Extensive stretch panels on calf

Extensive stretch panels on calf and crotch area for improved fit and feel

One-piece exhaust vent improves exhaust performance and aerodynamic stability

Embroidered twill patch front

This stack kit improves power throughout the entire RPM range

All spokes are polished to maintain surface strength

ALPINESTARS Supertech R Boots - Black - US 8 / EU 42 2220021-10-42 Purpose Mid-Layer Jacket Extensive stretch panels on calfAdvanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility Front flex area is constructed with a soft microfiber for improve abrasion resistance and natural forwards and backwards movement TPU for breathability and airflow Flexible accordion microfiber on Achilles gives enhanced natural movement Strategically positioned ventilation area in heel and shin Outside entry exit has stretchable