Storm bloc with blueguard hiking socks are engineered to go the distance with high strength filament polymers bound into the very yarn itself these anti abrasion socks deliver new levels of durability for all outdoor walkers and hikers blueguard yarn is benchmarked at a staggering 30 times more durable than a standard walking sock but that doesnt mean that storm bloc socks are harsh or uncomfortable after all what would be the point of that blueguard works perfectly within the soft cott