---
product_id: 295351149
title: "15-Pack Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8\" X 5\" X 20\" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks"
brand: "gymgit"
price: "₩40428"
currency: KRW
in_stock: true
reviews_count: 12
category: "Gymgit"
url: https://www.desertcart.kr/products/295351149-15-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene
store_origin: KR
region: South Korea
---

# 8" x 5" x 20" large size 0.2-micron breathable filter 6 mil heavy-duty polypropylene 15-Pack Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks

**Brand:** gymgit
**Price:** ₩40428
**Availability:** ✅ In Stock

## Summary

> 🍄 Grow Bold, Grow Smart — Your Premium Mushroom Cultivation Partner

## Quick Answers

- **What is this?** 15-Pack Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks by gymgit
- **How much does it cost?** ₩40428 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/295351149-15-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene)

## Best For

- gymgit enthusiasts

## Why This Product

- Trusted gymgit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Spacious & Standout:** Generous 8" x 5" x 20" gusseted bags provide a sturdy, upright structure for easy filling and monitoring.
- • **Breathe Easy, Grow Better:** Integrated 0.2-micron filter patches allow optimal gas exchange while blocking contaminants—grow like a pro.
- • **Ready for Action, Hassle-Free:** 15-pack bulk supply with easy sealing options—impulse sealer or simple tie/tape methods for instant use.
- • **Versatile Cultivation Powerhouse:** Perfect for oyster, Ganoderma, and other mushroom species; ideal for spawn bags and sawdust fruiting blocks.
- • **Built to Last, Designed to Perform:** Heavy-duty 6 mil polypropylene ensures durability and heat resistance for flawless sterilization cycles.

## Overview

The Gymgit 15-Pack Mushroom Grow Bags are heavy-duty, heat-resistant polypropylene substrate bags sized at 8" x 5" x 20" with a breathable 0.2-micron filter patch. Designed for professional and hobbyist mushroom growers, these gusseted bags hold up to 7 pounds of substrate, provide a sturdy stand-up form, and enable efficient gas exchange while preventing contamination. Ideal for various mushroom species and spawn blocks, they offer a reliable, easy-to-seal solution for indoor and outdoor cultivation.

## Description

desertcart.com : Gymgit 15-Pack Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks : Patio, Lawn & Garden

Review: Excellent! - These are great. Quality made and solid. thickness is standard- these are easy to use/seal. (If you don't have a heat sealer, just tape shut with micropore tape. If you don't have that, then just some clear box tape (like moving box tape) They are great at keeping moisture in without being too wet, and the filter patch is perfect. You can slowly push air out of it once your substrate is inoculated.
Review: Good quality bags - While the thickness doesn't feel like 6mil, these bags are solid. I ran one through my insta pot for 90min and it worked flawlessly. If your bags are exploding, you need to heat seal them better. The bags are quite big and definitely a good value at $0.50/bag. Will buy again for sure.

## Features

- Sealable and Durable: Mushroom substrate bags are made of polypropylene plastic designed to withstand high temperatures. The plastic is durable and clear enough to make monitoring growth easy. Can be sealed with an impulse sealer, or can just be tied to the seal.
- Reliable and Efficient: 15 Pack of 5 (gusset) x 20" (long) x 8 (wide) Mushroom bags can hold 5-8 pounds. Mushroom grow bags produce a side-gusseted style that gives a sturdy stand-up bag after filling and a strong bottom seal, effectively protecting your mushrooms or other plants.
- Excellent Breathable Filterability: mushroom grow bags with a 0.2-micron filter allow free exchange of gas while preventing the entry of pollutants. Grow like a pro mushroom growers around the globe use these bags to dramatically reduce space needed to grow or spawn mushrooms when compared to trays and tubs.
- Wide Application: Multi-use for inoculation of clone oyster mushrooms, bamboo fungus Ganoderma mushrooms, and more. They can also be applied to spawn bags and sawdust fruiting blocks. Great for school projects, hobbies, and even professional mushroom growers, farmers, and mushroom cultivation.
- What You Get: 15 Pack Farm Mushroom Spawn Bags. Each mushroom substrate bag that encounters problems in use can get a 24-hour response and solution. Five-Star Shopping Experience at Gymgit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08SQ5WXQ6 |
| Assembly required | No |
| Batteries required | No |
| Best Sellers Rank | #35,877 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #126 in Plant Grow Bags |
| Brand | Gymgit |
| Capacity | 7 Pounds |
| Color | Clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (389) |
| Finish Type | Unfinished |
| Finish types | Unfinished |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Item Weight | 9.5 ounces |
| Material | Plastic |
| Number of Levels | 1 |
| Number of Pieces | 15 |
| Pattern | Solid |
| Planter Form | Bag |
| Product Dimensions | 5"D x 8"W x 20"H |
| Shape | Rectangular |
| Size | 15-Pack |
| Special Feature | Durable |
| Style | Traditional |
| UPC | 048518182719 |

## Product Details

- **Color:** Clear
- **Material:** Plastic
- **Planter Form:** Bag
- **Special Feature:** Durable
- **Style:** Traditional

## Images

![15-Pack Mushroom Grow Bags, Heavy Duty 6 Mil Polypropylene Mushroom Substrate Bags, Large Size 8" X 5" X 20" for Mushroom Cultivation, Spawn Bags, and Sawdust Fruiting Blocks - Image 1](https://m.media-amazon.com/images/I/718hcguRouL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How can I seal the bag without an impulse sealer?**
A: I use a vacuum sealer, without the vacuum.

**Q: Can this bag be autoclaved or put in a pressure cooker?**
A: Yes. I just ran four bags through the pressure cooker this week and they all came out in perfect condition.

**Q: Where do i inject i thought i could go through the filter but that doesnt seem like a good idea. Can i tape over my holes?**
A: i would buy some injection ports, tape them onto hte bag, and inject through that, otherwise you'll leave an opening on your bag and that's going to be a source of contamination. I bought 100 filter injection ports on amazon for like 9 bucks, and i just tape them to the exterior of my bags that dont come with their own ports, and inject through that. You'll have a much better success rate, if you leave any kind of opening you can expect that 40% of your bags (or more, depending on your conditions) will contaminate. Never inject directly through the plastic.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent!
*by C***H on October 17, 2025*

These are great. Quality made and solid. thickness is standard- these are easy to use/seal. (If you don't have a heat sealer, just tape shut with micropore tape. If you don't have that, then just some clear box tape (like moving box tape) They are great at keeping moisture in without being too wet, and the filter patch is perfect. You can slowly push air out of it once your substrate is inoculated.

### ⭐⭐⭐⭐⭐ Good quality bags
*by B***B on September 20, 2024*

While the thickness doesn't feel like 6mil, these bags are solid. I ran one through my insta pot for 90min and it worked flawlessly. If your bags are exploding, you need to heat seal them better. The bags are quite big and definitely a good value at $0.50/bag. Will buy again for sure.

### ⭐⭐⭐⭐⭐ Highest quality I’m a repeat buyer!! No lie!
*by J***K on November 14, 2024*

These bags are great. If you’re into mycology, these bags are for you. They have high performance capabilities that allow them to not melt while being pressure cooked. These bags never rip or tear. They are clean and deliver on time! Thank you!!!

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**Shop now:** [https://www.desertcart.kr/products/295351149-15-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene](https://www.desertcart.kr/products/295351149-15-pack-mushroom-grow-bags-heavy-duty-6-mil-polypropylene)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-11*