Alpinestars: CE certified knee protector to EN 1621_1 : 2012 LEVEL 1.Extremely lightweight, durable and flexible guard constructed from breathable stretch mesh for comfortable, close fit.Highly convenient and time-saving slip-on design with elasticated cuffs and silicone printing to prevent slippage and help keep protector securely positioned.Pre-shaped, ergonomic design for optimized performance with various riding positions.Ventilation window on the back of the protector for additional ventilation.CE certified protector offers targeted coverage and protection against nicks and knocks.Protector pads are perforated and secured in mesh pocket for excellent breathability and core cooling.Protector pads are contoured to offer compressive, anatomical fit.Flat inward-facing seams for improved comfort and ‘second skin’ feel and fit.Silicone printing on the inner liner also prevents the guard being displaced while riding.Abrasion resistant fabric front panel.