Life bouy(inner tube:440mm, outer tube:720mm, thickness:110mm , 2.5kgs)

Outer Diameter (720mm/72cm): Fits within the standard range for lifebuoys, commonly designed with an outer diameter between 600mm and 800mm.
Inner Diameter (440mm/44cm): Provides a standard opening for a person to pass their arms and head through.
Thickness (110mm/11cm): Indicates a solid, durable construction (likely foam-filled) that provides high buoyancy.
Weight (2.5 kgs): This is a critical safety parameter. A 2.5 kg weight is generally considered sufficient for throwing distances, while being light enough for easy handling.