Mushroom Bags,Mushroom Grow Bag Farm-Mushroom Spawn Bags Sealable Spawn Myco Bags,Large Size 8" X 5" X 19",0.5 Micron Filter, 3 Mil Polypropylene,for Su,for Substrate Autoclavable Mushroom Cultivation

I used this to transfer lions mane spawn that was growing on uncle bens brown rice into rehydrated maple and hickory pellets. I was able to fit the whole thing in an instant pot to "sterilize" and everything turned out great! The bag thickness felt similar to commercial mushroom grow kits.

Good quality bags you won't be disappointed.

Arrived quickly and in good condition. Bags appear to be good quality. I have not attempted to grow mushrooms yet.

So far, these mushroom grow bags feel thicker and more durable than I expected, especially compared to some of the reviews mentioning thin material. I haven’t run them through an autoclave or pressure cooker yet, so I can’t personally speak to how well they hold up under high heat/pressure, but out of the package they seem decent in quality. I mainly use these for transfers, and for that purpose they should work just fine. One downside is that they are not self-sealing, so you’ll need to seal them yourself, which adds an extra step. Also, it wasn’t clearly indicated whether they are pre-sterilized or not, so I’ll be sterilizing them before use to be safe. Overall, they seem like a good value and should work well depending on your setup, but I’ll reserve full judgment until I’ve tested them under actual sterilization conditions. But very good price compared to others. I will know why sooner than later.And may change my review status.If needed the size of these bags seems like they're good enough for anywhere between 3 to 5 pounds of substrate. And grain

I bought some used like New ones for 1$ less and more than half of them were not usable. Is what it is, other than that they were good quality and worked well

Bags seem solid enough and not too flimsy. upon using these, the bags have melted inside of my pressure cooker @ 15psi for 1 hour and have released toxic smelling fumes that linger arround my house i do not reccomend!

This brand has several sizes the large are great, very good quality filter patches and easy to fold, and they seal great with impulse sealer. The xls are great also, very big bags I live them for fruiting. Now the smaller size bags I didn't care for they were very thin and hard to fold they didn't burst or anything and the filters were good just hard to work with

The bags split and cracked at the folds I placed in them, but I think that could've just been user error.

Seller claims bags are 3 mm, and charges like it's 3 mm it's barely .5 mm buy something else this is NOT the item advertised that was received.