Snake Chapz are designed with patented polycarbonate and acrylic inserts that have been puncture tested based on ASTM F1342.05 with no penetration. Material covering the inserts is made with 600 Polyester materials and a coating for water resistance and so fang venom does not soak into the material. The blaze orange color is the only color of this product that is made from polyester (others are nylon). Polyester is used because nylon cannot be dyed the high visibility orange and still stay bright. Snake proof up to 19 inches - just like boots. Heavy shoes or boots (not tennis shoes or similar footwear) are required for foot and ankle protection. Snake Chaps are to be worn over regular clothing. Meets Cal. 117 FR requirement for flammability. 100% Made in the USA!