Cockney, falls es Dir zu warm wird UND Du Dich zusätzlich gegen den internationalen Terrorismus schützen willst, dann hab ich was für Dich ... schau mal:
Under-Armor Cooling System
This mesh carrier holds two ~9" by 11" (~23 by 28 cm.) cooling packs front and back. Freeze them – they stay flexible – or just soak in chilled water, and they will keep you cooler for 2 to 3 hours.
Chilling only takes 15 to 20 minutes in ice water (longer in a refrigerator or freezer). Can be chilled and re-used thousands of times.
An added benefit is that you get lots of extra blunt trauma protection.
Quelle und mehr unter:
http://www.bulletproofme.com/Bomb_Disposal_Armour.shtml