Alpinestars: Lightweight knee protector is constructed from a laminated rip-stop PE foam and poly-mesh for superior breathability and airflow.Ergonomic, integrated Nucleon Flex Plus Technology protectors are strategically positioned to provide maximum protection in the knee area.Comfort liner prevents material bunching to ensure a snug fit while providing a soft-feel contact against the skin.Snug design offers a firm compression fit and soft tissue support for all styles of riding.Additional thermoformed inner and outer side padding for additional coverage.Hook and loop top and bottom elastic straps help keep the protector in place for effective protection.Silicon printing on the inner liner also prevents the protector being displaced while riding.Highly abrasion-resistant textile over the front panel for durability.According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply to this product:Knee Protector – EN 1621-1:2012 Level 1