The Alpinestars Bionic Plus Knee Protector is super light knee protection that provides exceptional shock absorption and is CE approved. This is made from highly durable materials that are well ventilated to provide superior airflow. The anatomical design is highly comfortable and ultra-protective and gives a proper fit for each knee. Large side extensions around the knee cap give maximum protection along with complete TPU coverage over the knee, shins and lower leg. These are designed to fit well with boots and are flexible and easy to adjust with straps to ensure an exact fit. These come as a pair.