Marseille type belt, thickness 4.0mm.

Made from a highly durable military-grade rubber blend. Additionally, around the holes where pressure is applied, there is a ring as extra reinforcement of the material.

The superior properties of the material provide excellent elasticity, great comfort during deep inhalation while also exhibiting high tensile strength even at weak points.

Resistance to wear, aging, and rot caused by solvents, seawater, exposure to sunlight, and temperatures experienced during transport and storage.