Self-Opening Sheath™

The Problem:

Flamingo and Rob are both Shivworks Alumni, our training has made us advocates for carrying a belt mounted fixed blade such as the Shivworks Clinch Pick. However, it is not always possible, reasonable, or legal to carry a fixed blade knife. In these cases, folding knives featuring the Emerson Knives Inc. "Wave" Opener are often substituted for carry.

Unfortunately, these knives are generally carried in a pocket or waistband. Our own experiences in training have shown that folding knives clipped to a pocket or waistband tend to disappear at inopportune times. Also, while the Wave is better than no opening device is is not always reliable, particularly in an entangled fight.

We sought to solve both of these problems by creating a sheath that more sturdily carries the folding knife on the belt and provides a mechanism for activating the Wave on the draw.

Our Solution:

The Self-Opening Sheath™ (SOS™) is available for three common waved knife models: Spyderco Waved Delica, Spyderco P'Kal (and P'Kal Trainer*), and Kershaw-Emerson CQC-6K (and E-Trainer*).

The SOS uses 2.5mm shock cord** which on the draw stroke activates the Wave as it normally would on the edge of your clothing. The sheath is made from .060" thick kydex and has industry standard hole spacing for mounting various clips or soft loops.

Our preferred (and included) mounting method is to use Velcro One-Wrap** as a form of soft loop. We find this preferable to traditional soft-loops with one-way snaps, because it is easier to don and doff, One-Wrap is wider providing more stability, and the sheath lays flatter on the belt aiding concealment.

Prototypes shown in photos. Production products will have higher level of fit, finish, and uniformity. Production photos coming soon!

Buy two and save $5 by using discount code: BuyTwo
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*Training Folders: We have found that live blades and trainers will generally fit the same sheath. The P'Kal may require additional or removal of rubber washers to get a firm fit. We include a few additional washers with P'Kal sheaths. All sheaths come with 0.75" wide bright blue hook-and-loop wrap to mark them as training sheaths.

**Because shock cord and hook-and-loop wrap have a finite work life we do not guarantee these items on the SOS. However, we include spares for you. We use standard 1.5" wide Velcro One-Wrap, 0.75" wide blue hook-and-loop wrap, and 2.5mm diameter shock cord.
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Shivworks, Clinch Pick, Spyderco, Delica, P'Kal, Emerson Knives Inc, Wave, Kershaw, Velcro, and One-Wrap are all trademarks of their respective owners.

Self-Opening Sheath and SOS are trademarks of Flamingo and Rob's Tools 2022.