Energy Shield, Turtle 6 (4e Future Equipment)
From D&D Wiki
Energy Shield, Turtle 6
Level 6 Advanced Waist Slot Equipment
Cost: 500 credits
Weight: 2 lb
Benefit: Provides 18 temporary hit points at the beginning of each encounter. Electric damage counts double against these temporary hit points.
A high capacity belt-mounted energy buffer that reduces the impact of any kind of attack. The field they project is normally invisible, but a shimmering blue pattern encapsulates the wearer when it reacts.