Knox Urbane Pro Mk3 Armored ShirtKnox invented the first back protector at the start of the 80's, then about a decade later introduced their first armored shirts. To say they have a lot of experience making the best armor and armored clothing is putting it mildly. Now with its third iteration the Knox Urbane Pro Mk3 Armored Shirt is designed to be worn on its own without any jacket. It may look light and it certainly is, but don't let that fool you it gave up safety features to do so. With an extensive combination of AA rated abrasion resistance and CE Level 2 low profile shoulder/elbows/back protectors, you get the whole package, no compromise.Note: This armored shirt fits snug. If you are on the upper end of a size or between sizes, we recommend you order the larger size.Features: Includes new MICRO-LOCK Compact Level 2 armor in the shoulders, elbows and back which is thinner, lighter and more flexible Constructed using High tenacity stretch nylon, combined with tough breathable arrownet mesh selected for abrasion, cut and tear resistance Stretch mesh panels added for flexibility and comfort YKK zips throughout 2 exterior zipped pockets with reflective zip pullers. Extra visor wipe included 4 interior low profile pockets Interior phone pocket and earplug pocket Comfort binding on neck and cuffs Innovative discreet stretch reflective binding that only reflects at night Discreet Knox branding on the chest, front hem and back A front placket with embossed branding for an extra feel of luxury and comfort on the neck Thumb loops for added security Security belt loop system is highlighted on the inside to ensure riders can secure their trousers to the shirt Machine Washable garment remove armor before washing Patch on the sleeve highlights Knox heritage and design Branded VELCRO® brand closure on the inside front for a MICRO-LOCK chest protector that can be added as an optional extra Low profile shoulder and elbows EN 1621-2 Level 2 Full CE approved back protector EN 1621 -2 Level 2 CE approved Class AA garment A CE Level AA rating, governed by the EN 17092-3:2020 standard, signifies that a garment is engineered to offer a high level of abrasion resistant protection suitable for a wide range of riding conditions, including touring and daily commuting. To achieve this classification, the materials in the most vulnerable areas of the garment, known as Zone 1 (typically shoulders, elbows, hips, and knees), undergo rigorous testing.The key test for abrasion resistance is performed on a specialized machine called the Darmstadt tester. In this test, a sample of the garment's material is subjected to a simulated slide on a concrete surface. For a garment to earn the AA rating, the material in Zone 1 must withstand a rotational speed of approximately 412.6 revolutions per minute (rpm) on the Darmstadt machine. This is designed to replicate a slide at a road speed of approximately 43mph (70 km/h). The material passes the test if it does not develop a hole larger than 5mm in any direction after the abrasion. This exacting standard ensures that the garment offers substantial protection against road rash in the event of a fall at typical road speeds. It is important to note that this abrasion test is just one component of the comprehensive testing required for certification. To earn the final rating, the garment must also pass rigorous standards for tear resistance, seam strength, the impact protection performance of the included armor and additional factors. under the CE standard EN17092