The Boker Magnum Rainbow Mermaid is a full‑size folding knife that blends everyday utility with a bold, decorative design inspired by maritime folklore. The drop‑point blade measures 3.74 inches and is manufactured from 440A stainless steel, providing corrosion resistance and reliable cutting performance for light utility tasks. A multicolored finish is applied across the blade surface, highlighting a detailed mermaid motif along the spine that evokes the figurehead of a ship. Overall length measures 8.62 inches, delivering a substantial in‑hand presence with a total weight of approximately 6.35 ounces.

The blade deploys via a rear flipper and locks securely using a liner lock mechanism for consistent operation. Circular cutouts in the blade echo bubble‑like detailing while reducing visual mass, and the sculpted handle continues the multicolored theme for a cohesive appearance. A left‑hand, tip‑down pocket clip supports carry, making the Rainbow Mermaid a functional folding knife that emphasizes visual character alongside everyday usability.