- Manbug Cobalt Blue FRN, Satin, Spyderco's ultra-compact EDC folder designed by Sal Glesser. Blade blade made of CPM SPY27 steel, lightweight FRN composite handle, back lock and full functionality with minimal size.

This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Manbug Cobalt Blue FRN, Satin is an extremely compact folder designed by Sal Glesser for complete utility in a minimalist format. While its dimensions suggest a keychain or backup knife, the functionality of this model is on par with many larger EDC designs. Designed to maximize space, the Manbug fits into any pocket or organizer, while retaining all the features of a usable everyday tool. Blade is made from CPM SPY27 steel, the result of a collaboration between Spyderco and Crucible Industries. This material combines high wear resistance, edge durability and excellent corrosion resistance, offering great performance in a lightweight, compact design. The leaf shape profile and full flat grind provide control and precision, regardless of blade size. Handle was created from lightweight and resistant FRN, enriched with Bi-Directional Texturing, which promotes grip stability even in wet conditions. The back lock centrally located on the back allows the blade to be securely locked when opened. The lack of a clip and the completely symmetrical design make the knife easy to carry on a daily basis and make it fully ambidextrous. The Manbug is an excellent option for those looking for an ultra-lightweight but fully functional folder for everyday tasks.
CPM SPY27 - a proprietary blend of alloys including vanadium, molybdenum, niobium, nitrogen and cobalt. The high-alloy stainless steel contains 1.4% carbon and a 1% admixture of niobium (Nb), one of the best carbides, which contributes to the steel's wear resistance. Thanks to its properties, the steel holds sharpness for a very long time and guarantees aggressive cuts for a long time. It is easy to sharpen, corrosion resistant and contains a high admixture of 14% chromium. It provides good strength and cutting edge retention, as well as a fine-grained structure. Produced by US Crucible Industries using the particle metallurgy / Crucible® Particle Metallurgy(CPM) method. The CPM process creates a very homogeneous, high quality steel with excellent dimensional stability, grindability and ductility compared to steels produced by conventional methods.
Blade - made of CPM SPY27 steel, which is a proprietary alloy of Spyderco and Crucible. Thanks to the addition of niobium, vanadium, molybdenum and cobalt, this steel is characterized by high abrasion resistance, blade durability and excellent corrosion resistance, making it a suitable choice for everyday tasks in variable conditions. A leaf shape profile is used, which, thanks to its geometry and wide belly, allows the blade to be guided precisely through the material, even with limited blade length. The full flat grind improves cutting efficiency, while the satin finish reduces glare and masks minor signs of use. The classic Spyderhole allows the blade to be opened conveniently with one hand, despite the small size of the design. Despite its compact size, the Manbuga Blade offers full functionality and precision in use, meeting the needs of people who appreciate discreet but efficient EDC tools.
Handle - made of FRN (Fiberglass Reinforced Nylon) - a material with high mechanical strength and resistance to moisture, corrosion and changing environmental conditions. Thanks to fiberglass reinforcement, the material retains structural rigidity with extremely low weight, allowing the user to comfortably carry the knife without additional weight. The surface features Bi-Directional Texturing, which is a special texture that aids grip in two axes - this solution effectively improves control of the knife even with a slippery hand. Gentle undercuts and profiling adapted to the size of the hand facilitate ergonomic handling of the blade. The back lock located in the upper part of the Handle allows efficient and secure locking of the blade while working. The lack of a clip and the symmetrical design allow you to carry the knife in your pocket or as a keychain, ensuring full accessibility and ambidextrousness. The Manbuga Handle combines lightness, ergonomics and resistance, making this model a solid, compact tool for everyday use.
Technical data:
Product number: MPCBL
Product name: Manbug Cobalt Blue FRN, Satin
Overall length: 113.0 mm / 4.46"
Blade length: 50.0 mm / 1.96"
Blade thickness: 2.5 mm / 0.098"
Handle length: 64.0 mm / 2.5"
Handle thickness: n.d.
Weight: 20.0 g / 0.7 oz
Blade material: CPM SPY27
Blade hardness: n.d.
Blade grind: Full Flat
Blade finish: Satin
Handle material: FRN (Fiberglass Reinforced Nylon)
Handle finish color: Cobalt Blue
Backspacer material: Stainless Steel
Backspacer color: Gray
Clip: None
Clip material: None
Pivot mechanism: Washers
Locking mechanism: Back Lock
Opening method: Manual, thumb hole
Additional accessories: None
Designer: Sal Glesser
Brand: Spyderco
Manufacturer: Spyderco Inc., U.S.A.
Country of Origin: Japan
Developed by: the Sharg® company