Fathom Blue is a purpose-built apnea diving fin (free diving / spear fishing). The comfortable foot pocket and power ful blade provide efficient thrust and unparalleled underwater maneuverability. Furthermore, there are two blades with different flexibility available to suit different divers' preferences and requirements
Although more expensive, rubber is our chosen material to make Fathom Blue's foot pocket . It might seem a bit old fashioned but at the end of the day, it is all about performance. We were able to strategically build a rubber foot pocket with multiple flexibility / hardness while fins made from various plastic compounds do not share the same advantage. This means Fathom Blue's foot pocket is able to produce a spring-like effect when finning, yet its base (sole) is rigid and efficient.
The BTA0150 boots are like neoprene socks with ultra thin rubber soles. This gives spearfishermen the protection needed for walking while foot pocket fitting is not hugely affected.
Blade dimension - effective (H × W): 22cm × 60cm (8.5" × 24").
Overall length: 92cm / 36" (size XL).
Weight (pair, land): 3kg / 6.6 lb (size XL).
Blade: The black blade is more stiff and produces stronger thrust for those who needs extra momemtum.(see Product#fin74 for the Flexible Blade Option).