What is a bump case and why do I need one?
The bump case is a protective outer covering for the environmental housing. Made from 1/4 inch [6.4 mm] closed-cell Neoprene , id dies not absorb water. It is coated with Nylon on both inside and outside. You will recognize this as the same material that wetsuits are made from. The bump case protects the housing, a waterproof plastic box, plastic box from shattering, protects the instruments inside from greenhouse effect heating, and it provides a place to attach a strap to the unit. The strap can be used to carry the unit, or to tie it to a secure point, such as in a rubber boat. The bump case was first sold as an option, but since almost every customer ordered one, it soon became a standard part of the package.
