A big old oxidized brass diving helmet, with scripted, menu-driven window opacity settings. This set comes with the helmet as well as the rest of the suit:
prim collar
prim gauntlets
prim boots
prim belts (2 - one with weights)
shirt
pants
socks
gloves
Comes in medium and large, with copy/mod permissions so you can customize for your avatar.
SLX Listing
Please visit I.J. Ginsburg Dept. Store in-world for more steampunk goodness: