Nailers K2 Knee Pads are made from heavy duty foam padding and covered with anti-abrasion and anti-puncture reinforced Nylon material, so even the area around the hard plastic face or cap is designed to protect you and keep you comfortable. The white gripper face offers protection from punctures and is designed to allow you to remain in contact with the floor without slipping or without marking the floor in any way; great for use on laminate flooring or other delicate floor materials that could scratch or mark easily. They are tested and certified to European standards EN14404:2004 Level 1 which means the K2 is construction site approved. All Nailers knee pads are also tested for abrasion. There are two straps that are fully adjustable and help hold the pad in place, even when walking on your knees. The quick release design allows you to quickly and easily clip them on or off. Please be aware that two strap designs can create a pinching sensation at the back of the knee, especially if you are going from a kneeling to a standing position regularly. If this is the case then we suggest Nailers G2 Gel-filled knee pad as its wide single strap offers comfort. Nailers K2 pads offer protection and comfort at an affordable price. We would recommend that if you are looking for a more comfortable pad, for prolonged use and extra comfort you try any of our Nailers Gel-filled kneepads. They come with a variety of different caps or faces designed specifically for you to get the best solution for the task youÕre performing or the environment you are in. All Nailers Gel knee pads all mould to the individual shape of your knee, so the more often you wear them, the more comfortable they become. Look out for the other models from Nailers that are construction site approved too.