Poikilo Mundus Penitentia S1 M390 Titanium Folding Knife

Poikilo Blade Mundus Penitentia S1 – M390 & Titanium

The Poikilo Blade Mundus Penitentia S1 is a high-end folding knife built for enthusiasts who demand premium materials, bold design, and top-tier performance. With its large profile, refined construction, and standout finish, the S1 delivers both cutting power and collector-level appeal.

This version features a 3.875-inch M390 blade with a striking pearlescent stonewash finish, paired with durable titanium handles. Designed for smooth operation and everyday reliability, the Mundus Penitentia S1 blends performance, strength, and visual impact into a true premium EDC knife.

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M390 Blade Performance

The blade is crafted from M390 steel, a premium powder metallurgy steel known for exceptional edge retention, corrosion resistance, and toughness. Its larger blade profile provides strong cutting capability, while the pearlescent stonewash finish gives the knife a unique iridescent look while helping reduce visible wear over time.

• M390 premium blade steel
• Excellent edge retention and corrosion resistance
• Large blade profile for powerful cutting performance
• Pearlescent stonewash finish for unique visual appeal
• Durable finish that helps hide wear

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Titanium Handle Construction

The handle is built from titanium, offering an ideal balance of strength, weight, and durability. Titanium provides corrosion resistance and a premium feel in hand, while maintaining a solid structure for hard use. Its clean black finish complements the blade’s unique look for a cohesive, high-end design.

• Titanium handle scales
• Lightweight yet extremely strong construction
• Corrosion-resistant material
• Premium feel with modern styling

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Button Lock & Smooth Operation

The button lock system provides secure blade lockup with smooth, easy one-handed operation. This design allows for fast deployment and simple closing, making the S1 both user-friendly and reliable for everyday carry.

• Button lock for secure lockup
• Smooth one-handed opening and closing
• Reliable and modern locking mechanism
• Easy-to-use everyday carry design

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Ambidextrous Carry Setup

The knife includes a reversible pocket clip for tip-up carry, allowing both right and left-handed users to configure the knife to their preference. Despite its substantial size, the S1 remains manageable and comfortable for everyday carry.

• Ambidextrous pocket clip
• Tip-up carry configuration
• Right or left-hand carry options
• Balanced size for everyday use

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Premium Heavy-Duty EDC Knife

With its large M390 blade, titanium construction, and unique pearlescent finish, the Poikilo Blade Mundus Penitentia S1 is an excellent choice for those looking for a high-end EDC folding knife with serious presence. It offers the performance of a hard-use tool with the aesthetics of a collector’s piece.

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Specifications