The Difference in 30 Seconds
✓ Full Mesh Bags
The entire bag — sides and bottom — is made of woven mesh at the rated micron size. Water drains through the entire surface area.
- ✓ Drains 3-5x faster
- ✓ No nylon sidewalls to shed plastic
- ✓ Easier to collect hash (scrape from flat mesh)
- ✓ Don't need to reach into the bag
- ✓ Last longer — mesh doesn't degrade like nylon
- ✗ Cost 30-50% more
✗ Bottom Mesh Bags
Solid nylon sidewalls with mesh only at the bottom. Water can only drain downward through the bottom panel. Most budget bags are this type.
- ✗ Slow drainage — water pools in the bag
- ✗ Nylon sidewalls shed microplastics over time
- ✗ Hash collects on sidewalls too — hard to scrape
- ✗ Have to reach elbow-deep into cold water
- ✗ Nylon degrades faster than mesh
- ✓ Cheaper upfront ($35-75 for a set)
Why Drainage Speed Matters
When you pull a bag out of your wash bucket, the water needs to drain through the mesh. With full-mesh bags, water exits through the sides AND the bottom simultaneously. Drainage takes 30-60 seconds.
With bottom-mesh bags, all that water has to funnel down to the one mesh panel at the bottom. You're standing there for 3-5 minutes per bag, holding it up while water slowly drips through. With an 8-bag set, that's 25-40 minutes of just standing and holding wet bags. Your ice is melting. Your water is warming up. And your back hurts.
One Reddit user said it perfectly: "I accidentally replaced my full mesh bags with bottom mesh. They are a nightmare in comparison and I have to reach into the bucket elbow deep in icy water."
If you're only washing once to try it out, bottom mesh is tolerable. If you're doing this regularly, the drainage speed alone makes full mesh worth the extra $30-50.
The Microplastics Issue
Bottom mesh bags have nylon sidewalls that degrade. After repeated use — especially with cold water cycling (freeze-thaw) and scrubbing to clean — the nylon breaks down and sheds microscopic plastic particles into your wash water. Those particles end up in your hash. And then in your lungs or stomach.
Full-mesh bags avoid this because there are no solid nylon panels. The woven mesh is structurally different — it flexes without breaking down the way sheet nylon does.
Is this a dealbreaker for casual use? Probably not — one or two washes with bottom-mesh bags won't poison you. But for regular use, the risk compounds. Labs have detected microplastic contamination in commercially produced hash traced to cheap bags and equipment.
More details on which brands use which mesh type: brand comparison.
Which Brands Sell Full Mesh?
Full mesh standard: Original Bubble Bag, The Press Club, BoldtBags, Rosin Evolution
Bottom mesh only: BubbleBagDude, iPower, most Amazon generics, Wacky Bags
When shopping, look for "all mesh" or "full mesh" in the product description. If it doesn't mention mesh type, assume it's bottom-mesh only. Full-mesh brands always advertise it because it's a selling point.
The cheapest full-mesh option available in Canada is Rosin Evolution on Amazon.ca — around $90-120 CAD for an 8-bag set with Prime shipping. That's only $30-40 more than the cheapest bottom-mesh set.
When Bottom Mesh Is Fine
We'll be fair: bottom mesh bags aren't useless.
Your first wash: If you're spending $50 to find out whether hash-making is for you, BubbleBagDude bottom-mesh bags are a reasonable entry point. Upgrade later if you stick with it.
Making edibles only: If the hash is going into butter or oil, microplastic concerns are lower (you're eating, not inhaling) and grade separation matters less. Budget bags work fine here.
Teaching someone: Don't hand your $200 full-mesh set to a beginner who might rip them. Let them practice on cheap bags first.
For anything you plan to smoke, dab, or press into rosin — full mesh. No debate.
Related Guides
→ Brand Comparison — full pricing and quality breakdown by brand
→ Which Micron Bags Do I Need? — interactive selector tool
→ Equipment Setup Guide — bags are just one piece of the puzzle
→ Beginner's Guide — the full walkthrough