100 Pack of 15 x 50cm Bags that allow plenty of room for mushroom growing and spawn, substrate and fruiting. These side-gusseted breathable bags stand up and hold strong.TEAR RESISTANT: 6 Bags, these are designed to withstand high temperatures that come with sterilization.High temperature resistance 121-125Celsius FILTERING 2 Micrometre filter allows for to freely be exchanged, while keeping contaminates out. The clear bag helps to quickly spot any instances of contamination LIKE mushroom growers around the globe use these bags to dramatically reduce space needed to or spawn mushrooms when compared to trays, tubsMULTI USE for inoculation of media with mushroom oyster spawn, clone oyster mushrooms and more window size: 55x55mmSize: 15cm x 50cmThickness: 6 BagsSealing : these mushroom bags can be sealed with an impulse , or just tie to seal . these bags are durable and can be reusable in most .Water content of material: If the water content of the medium is too high, the ventilation will be affected, hyphae will slowly due to of oxygen, moisture will be deposited in the lower half of the cultivation bag, and the hypha length will not be to go.colour:TransparentMaterial:PPPackage Contents:100 x Mushroom BagOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.