ALPINESTARS Stella SMX-1 R V2 Vented Boots - Black - US 10 / EU 42 2224121-10-42 Synapse HD Knee Protectors Designed to fit OEM bearing

Designed to fit OEM bearing and crank pin

a double closure system and multi-layer reinforcements with accordion and stretch zones

Shell construction utilizes a highly advanced molding technology with a multi-composite combination: 3K Carbon

Pouch pocket with contrast edging

an integrated low-friction layer designed to reduce rotational motion transferred to the brain from the angled impacts to the head

ALPINESTARS Stella SMX-1 R V2 Vented Boots - Black - US 10 / EU 42 2224121-10-42 Synapse HD Knee Protectors Designed to fit OEM bearingAnatomically engineered for an optimized womens fit Rear flex bellow is equipped with a flex window, which also acts as an air intake for effective ventilation and airflow New ergonomic TPU shift pad for enhanced durability in a critical area Main upper constructed from an advanced microfiber for comfort, durability and excellent of abrasion resistance Rear of heel counter has been designed with soft TPR insert which works seamlessly with the rear