1000d Cordura shell, polyester mesh lining. Fastens to you leg with tenacity. 5 metal snaps with elasticity, fastens to your leg with tenacity. Machine wash when dirty hang to dry when wet. This style is the ultimate for rough mountain hikes sliding kneeling on the ice and playing in the snow. Riding horseback or motorcycles you will appreciate the way you put these on. There is nothing else like it in the world. The patented design offers a air gap on the back of your leg allowing air to ventilate and keep you comfortable even in hot weather. The patented design has no material behind the knee offering no binding of extra material when using them for contractors knee protection utility workers and lawn care. A new improved Quarterchaps on my original design. With a new strap location. Guaranteed to keep snow and rain from creeping up your pant leg.