The YoJumbo uses Spyderco's Compression Lock, built into the black-coated stainless steel liners. When the knife is open, a leaf spring in the liner wedges between the blade tang and the stop pin. You release it from the spine side of the handle with one hand, which keeps your fingers out of the blade's path as it closes.

Yes. Spyderco donates a portion of the sales of its pink-handled knives, including this YoJumbo, to Living Beyond Breast Cancer, a nonprofit organization that provides information and support to people affected by breast cancer.

Michael Janich designed the Yojimbo 2, and the YoJumbo is its scaled-up counterpart, with a 3.98-inch blade and a 5.37-inch closed length. It keeps the straight Wharncliffe edge with the point in line with the edge, which gives precise tip control, and the longer blade adds reach and cutting length for bigger tasks.

CPM S30V is an American powder metallurgy stainless steel developed specifically for knife blades, with a balance of edge retention, toughness, and corrosion resistance. On this knife it is hardened to 58-61 HRC. The black Diamond-Like Carbon (DLC) coating gives the blade a non-reflective finish and adds a hard surface layer over the steel.

The C253GPNBKP ships as a knife with its four-position pocket clip installed. It is knife only, with no sheath included. Packaging and included items are set by Spyderco and are subject to change.

This Sprint Run is made in the United States. Spyderco warrants that its genuine products are free from defects in material and workmanship for the life of the product. The warranty does not cover loss, theft, accidents, abuse, misuse, improper sharpening, normal wear and tear, or alterations, and broken, lost, or bent metal clips are typically not covered. Shipping to and from Spyderco is the owner's responsibility. Contact Spyderco directly and include the Spyderco Warranty & Repair Form with any return. Knifeworks does not warranty this product independently.