The Oxford RK-Pi2 Insert Elbow / Knee / Shoulder Protector (Level 2) comes in a pack of two and are great for replacing used or damaged protection in your Oxford garments.CE Level 2 certified, offering comfort and securityFlexible and lightweightReplacement level 2 Elbow, Knee and Shoulder protectorsOffers comfort and security equallyThe Oxford RK-Pi2 Insert Elbow / Knee / Shoulder Protectors are CE Certified to Level 2, which means that the maximum transmitted force must be below 9 kN, and no single value shall exceed 12 kN. Due to Hips being part of CE RISK CATEGORY ZONES - Zone 1, they are at a high risk of damage e.g. impact, abrasion, and tearing. They must have impact protectors and needs to last 4 seconds on the abrasion test to meet Level 1 protection, and 7 seconds to meet Level 2.