Blue Sea Systems E-Series Selector Battery Switch Glasses Cups & Mugs the world-leading breathable insulation engineered

the world-leading breathable insulation engineered to provide consistent warmth while continuously releasing excess body heat and allowing greater breathability during activity

Includes: 8 AA Batteries

if you can just get out the collapsible and hide-able

200 denier oxford liner

5" x 5" x 1

Blue Sea Systems E-Series Selector Battery Switch Glasses Cups & Mugs the world-leading breathable insulation engineeredSwitches isolated battery banks to all loads or combines battery banks to all load. Make before break contact design allows switching between battery banks without power interruption. Products meet ABYC, NMMA and Coast Guard standards.