One-Hand Trekker Camoflage knives are large Swiss Army knives (4 3/8" / 111mm) from Victorinox, that are similar to the smaller Hiker.

This variation of the Trekker features a serrated blade with a thumb release, so it can be opened with only one hand. It has camoflage shells, and is one of the only current Victorinox knives that does.

There are many other variations of this knife, with different combinations of features (see below).

Trekker-- black shells, straight blade, no thumb release
One-Hand Trekker-- black shells
One-Hand Trekker Non-Serrated-- black shells, non-serrated blade
One-Hand Trekker Black Blade-- black shells, black blade
One-Hand Trekker German Army-- olive shells with imprinted logo
One-Hand Trekker Camo Non-Serrated-- non-serrated blade

Centurion-- no wood saw, no thumb release
Forester-- corkscrew instead of phillips screwdriver, no thumb release