Exclusive Cressi Sub slings, carefully studied for use in all types of fishing and spearguns and suitable for hole fishing of medium pieces with 6mm and 6.5mm rods. Its composition, level of hardness and thickness are the result of multiple tests on different prototypes and the final product meets the requirements of the medium and medium-high level fisherman.

The basic composition is pure latex from Malaysia without any type of "filler" or mixture of impurities in its composition, except for the black dye and the inert products necessary to provide them with the ideal hardness (shore 42) and make them extremely resistant to the action of ultraviolet rays, saltpetre and ozone.
Its power is due in part to the relative hardness of its composition (shore 42 against usual levels of 38 to 42) and its diameter of 16.5mm against the actual 15mm or 15.5mm of many rubbers advertised as 16.A meticulous process of pairing guarantees the maximum similarity between the two rubbers both in length and in Shore hardness.

They are served with screen printing in white latex to identify the article and with vacuum blister "skin" for greater ease of display in the store and insulation from the outside.