Fly Racing's HDM (High Density Memory) protectors are made of a special blend viscoelastic foam with memory function allowing for repeat impacts. The protectors have been impact tested and approved to CE EN1621-1:2012 to ensure a high level of protection. The pads are both soft and lightweight to ensure they stay comfortable even on long days pedaling in the saddle. Aramid fabric front panel to ensure durability and abrasion resistance. 4 way stretch mesh panels at the rear help in giving a great fit and allowing hot air to escape keeping the pad feeling cooler. Open back design means you don't get any fabric bunching up at the back of the knee when pedalling and is also great for breathability. Added foam protection at the sides and top of the knee give extra coverage. Strategically placed straps at the upper calf muscle and at the thigh help to prevent the pad from slipping down during use. Fly Racing have chosen to use centred straps so that when they are pulled tight they provide even tension. Internal silicon gripper bands are used at the upper and lower opening of the pads to also try and stop the pads slipping down during use. Comes with left and right knee guards Fly Racing - Lite Knee Guards Fly Racing started out making motorcycle parts and helmets nearly two decades ago. Since then, they have become one of the most recognizable names in racewear. The company has grown quickly, and now distributes their products to over forty countries worldwide. Fly racing makes protective gear and racewear for motocross, street, snow, and BMX. Additionally, Fly racing is gaining notoriety for their high performance mountain bike gear. Their brand new 2017 line of mountain bike protective gear is loaded with great gear products built to protect rides so they can push their limits. The Fly Racing Lite Knee Guards are some of most protective mountain bike knee pads out there, thanks to its many great features. The knee guards offer protection in the form of High Density memory Foam. This material does an excellent job at providing protection to repeated impacts. Despite the substantial protection that the foam provides, it is extremely lightweight and low profile so it won’t affect the riders’ performance on the bike. The mountain bike knee pads are very comfortable to wear. They are made of a four way stretch mesh material to facilitate airflow, but allows the rider to remain flexible. There are special ventilation holes to increase ventilation as well. On the inside of the knee guards are silicone gripper bands. These provide a slip resistant surface so they don’t up and down the riders' leg and become a distraction or hindrance. Brand Fly Racing SKU 100352084_NP-1020618089 Model Lite Knee