Victorinox Swiss army knife sheath 4.0521.31. Swiss army knives by Victorinox have been renowned for their versatility worldwide for more than 120 years. The Victorinox company offers over 800 different types of Swiss army knives, including Victorinox Swiss army knives, Victorinox pocket knives, Victorinox craftsman knives, Victorinox household knives, and Victorinox butcher knives. Victorinox knives are small enough to be used as a key ring, yet large enough to be useful for everyday tasks. Despite their compact size, Victorinox Swiss army pocket knives are fully functional in every situation. Victorinox Swiss army knives make a suitable gift for both women and men. A matching holster makes the knives even more attractive and practical.