Black Bungee Shock Cord in 4mm, 3mm or 5mm thickness are useful for many diving situations.

Which Bungee Shock Cord to get?

The 4mm bungee is suitable in thickness and stretch for most applications and is quite popular, while the 3mm bungee provides extra flexibility with a thinner/lower profile and is lightweight. 5mm bungee is where a robust, less flexible bungee is necessary.