Also called micro balloon, this product consists of micro-glass balloons.

Given its extreme lightness (D = 140 g in liter), the risk of inhalation is great. It must be handled in accordance with the following rules:
- Port of a security mask equipped with combined filters classified A1B1E1-P3
- Port of safety glasses
- Port of gloves strongly recommended
 

These micro spheres can be incorporated into bricoresin, but also to plastilor to make floating flexible lights (weightless montages). Naturally the microballon tends to opacify the plastilor.