【Includes Shipping】Non-woven fabric filter for mycelial bottles, Tyvest Seal Non-woven fabric filter for mycelial bottles This is a set of 60 filters with a diameter of 40mm. You can stick them on poly bottles or glass bottles. It has good breathability, doesn't tear even when wet, prevents the entry of harmful bacteria and insects, and has good moisture retention, allowing you to wash and reuse it. This product is used by many mushroom bed manufacturers. You can buy it immediately. We cannot negotiate the price of this product. Please note that we will not reply to comments regarding price reductions. If you want a quantity other than the quantity listed, please contact us. This is a safe and secure anonymous delivery service that allows buyers to trade without revealing their name or address. We will ship via Yu-Yu Mercari delivery, so we cannot specify the date and time of arrival. Basically, if we can confirm payment in the morning on weekdays, we will ship the same day. Please note that we cannot ship on Sundays and holidays. If you have any problems upon arrival, please contact us via message. Japanese Giant Stag Beetle Japanese Giant Stag Japanese rhinoceros beetle Rhinoceros beetle Stag beetle Stag Tyvest filter Tyvest seal Tyvest Insect jelly Pro jelly Mycelial bottle Mycelial bottle Mushroom bed KB Farm Clear bottle Glass bottle Poly bottle