Black Razer Snake Gaiters are light-weight (each weighs only 12 ounces) and are uniquely contoured to fit around your calves. A toe cover protects the laces of your boot (if struck, you definitely don't want snake fangs becoming entangled in your laces!). This means you have 12 inches of snake bite protection (approximately knee to ankle) with an additional 5 inches of protection across the top of your foot. 1000 denier nylon cordura covers polycarbonate inserts that wrap around your lower leg to stop snake fangs, cacti needles, briars, thorns, sticks, etc. These snake guards also help keep your pants clean and dry. Always wear snake gaiters over pants and with footwear that fangs cannot penetrate. Each pair comes with a FREE nylon storage bag. One size fits most! Measure around your calf while wearing pants. Razer Snake Gaiters are adjustable and will fit calves 13 to 20 inches in circumference; 12 inches tall from knee to ankle. Lab tested in the USA for puncture resistance. 3 year replacemnt warranty for defects in materials.