The Salvimar Black Drop weight vest is an ergonomic neoprene back pack with shoulder straps for extreme comfort and can hold up to 6kg. Weight vests are used in conjunction with a weight belt to more evenly distribute your required diving weight across your body. This can result in a more balanced feeling in the water. It is recommended NOT to put more than one third of your total diving weight into the vest. This helps to ensure you can still achieve positive buoyancy by ditching your weight belt should you need to.