Spyderco's signature: belly on both the edge and the spine, meeting at a tip near the centreline. It gives a lot of cutting edge in a short blade, which is why it dominates short-blade EDC.
Knives
3
Blade range
2.25″–3.58″
Weight range
1.2–5.2 oz
The shape across the size range
01234567 in
Spyderco Dragonfly 2 · Leaf
2.25″ blade · 0.093″ spine · 1.2 oz · ~1.06″ tall
Spyderco Sage 5 Lightweight · Leaf
3″ blade · 0.118″ spine · 2.9 oz · ~1.29″ tall
Spyderco Shaman · Leaf
3.58″ blade · 0.145″ spine · 5.2 oz · ~1.56″ tall
Spine thickness, same scale
0.093″
0.118″
0.145″
Length and spine thickness drawn to true scale from published specs. Outline traced from the maker's side-profile photo.