Our UK UltraBoxes are small and compact, yet rugged cases. These tough as nails cases are o-ring sealed against water and airborne particles and built to accommodate an electronic panel in either the lid or bottom of the case if desired. The unique latch design automatically equalizes the internal and external pressure for easy opening after altitude or temperature changes. Items placed within the UltraBox are protected by a (optional) shock absorbent removable rubber liner. Our UK UltraBox series is available in Yellow and Back; each color is available with a clear lid to view contents inside the case.