Used Mares Bolt SLS BC VestThe Bolt SLS rear diver's bcd offers unmatched comfort and stability, with a buoyancy of up to 18. 5 kg. The 18. 5kg buoyancy is guaranteed in all 5 new sizes (2 more than the previous versions) to provide a perfect fit for all divers. The new SLS ballast system has a capacity of 4+4kg on sizes XS to M, and 6+6kg on sizes L and XL. Among other features, the specific visual confirmation of the correct positioning of the ballast provides safety when