The Spyderco YoJumbo is a larger take on Michael Janich’s Yojimbo 2, featuring an enlarged design for better ergonomics that suits a wider range of hand sizes. This model includes a deeply hollow-ground Wharncliffe blade made from CPM SPY27 steel-a cobalt-enriched stainless steel exclusive to Spyderco, offering excellent edge retention, toughness, and corrosion resistance. It opens with Spyderco’s signature Round Hole for ambidextrous one-handed deployment.
- Overall Length: 9.29″ (236mm)
- Closed Length: 5.37″ (136mm)
- Blade Length: 3.98″ (101mm)
- Blade Thickness: .145″ (4mm)
- Blade Steel: SPY27
- Handle Material: G-10
- Pocket Clip: Yes, right or left hand, tip up/tip down
- Lock Type: Compression
- Weight: 5.3oz
- Country of Origin: USA









