1.   A long fluid-filled tube runs beneath the skin along the middle of each side of their body.

2.   A tube runs through the ice carrying air and water to Blaine with a medical team standing by to monitor his vital signs.

3.   The other integral part of the double-skinned suit is the material making up each layer between which the tubes run, he said.

4.   Tubes run through the passage between the layers.

5.   Two tubes run from it to compare how cloudy the air is outside the mask to that breathed inside.