Victorinox Swiss Army Classic SD Pocket Knife

The Victorinox Swiss Army Classic SD is the smallest and best-known model in the brand's lineup — 58 mm closed and just 21 g. Its seven tools (blade, scissors, nail file with a screwdriver tip, tweezers, toothpick, and key ring) cover basic daily needs, but this smallest format skips the can opener and corkscrew found on larger models. That low weight is exactly why it's a common keychain choice and why some hikers carry it as a lightweight backup — a usable blade and scissors without adding noticeable weight to a kit. It isn't an outdoor knife in the strict sense: the blade is short and there's no locking mechanism. As a first-aid or minor-repair companion in the field, though, it does the job reliably while barely registering on the scale.