ALPINESTARS Supertech R Boots - Black - US 8 / EU 42 2220021-1100-42 104-0007 secure and personalized fit with

secure and personalized fit with the SAS (Size Adapter System) for a versatile fit

15L front-ported box is constructed from premium 3/4" MDF for optimal resonance control

the GEN-X amplifiers can be installed without the need of a secondary or high-output alternator

Jacket construction incorporates a 7cm slim

ALPINESTARS Supertech R Boots - Black - US 8 / EU 42 2220021-1100-42 104-0007 secure and personalized fit withAdvanced 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