Spawn-bag, 20 cm + 12,5 cm for gusset, 49 cm long,set of 5 Spawn-bags with filter.

Unicorn Spawn-Bag with filter patch, Provide a perfect environment for fungi growth
A custom-made, autoclavable, gusseted spawn incubation bag complete with
a micro porous filter patch that allows gas exchange but prevents the passage
of airborne contaminants.
These bags are widely used by exotic mushroom growers throughout the world.
Stay soft and easy to seal after heat treatment in autoclave for six hours at 262oF (125oC).