The Victorinox Solo Swiss Army knife is a simple but hefty pocket knife with a ribbed plastic body, and a single extra-large blade. This is a fairly inexpensive knife that still has the same Victorinox quality as in fancier knives.

This model was called the Adventurer when it was first produced in the 1980's, though the modern Adventurer is a different knife.

Alpineer-- locking blade, adds a corkscrew
Gardener-- a slightly shorter single-bladed knife with a different profile (4" / 100mm)
Safari Pathfinder-- adds awl and wood saw with bottle opener tip (retired)
Sentry-- smaller size (3 1/4" 84 mm)
Solo Alox-- aluminum body
Solo Plus-- adds a corkscrew