Nylon Rosin Press Filter Bags 2″ x 4.5″ Review

Rosin Press

Looking for an in-depth review of the latest Nylon Filter Bags? 

Squish Strong’s Nylon Rosin Press Bags work with any press you may have. They are made with 100% nylon and use double stitching to help prevent blowouts. Dye-free bags means these are clean and safe to use, so you’ll have no worries about your rosin being contaminated.

Top Features

100% Nylon

The material used for these bags is 100% nylon, no silk or any other material included.

Food-Grade Material

The nylon used is dye-free and marked as food-grade. This means that any material that comes into contact with the bags won’t be contaminated with dye or other chemicals. Always a plus when pressing rosin, since you don’t want to be ingesting any chemicals or dyes along with your rosin.

Double Stitching

Squish Strong uses a double stitching method on all their rosin press bags. This helps keep the seams from bursting as easily and this can prevent blowouts.


Squish Strong claims that these rosin press bags can handle up to 300 F and “extreme pressure”, which is great as it means the bags can be used with a variety of pressures and temperatures depending on user preference.

Compatible with Any Press

Squish Strong doesn’t advocate for a certain press to be used with these bags; you can use them with any press on the market, whether you’ve DIYed one for yourself or bought one of the many that are available.

Multiple Sizes Available

I tried the 90 micron size, but that’s not the only one you have to choose from. They also come in 25, 37, 73, 120, and 160 micron units. This means there’s a size available for any use, whether you’re using flower or bubble hash, whether you want better filtration or higher yields.

Holds a Lot of Material

The bags are 2”x4.5”. The double-stitching also helps with holding in material, as you can pack it down into corners more easily, without worrying about tearing any seams.

First Impressions

When I first opened the bags, I was impressed with the quality of both the nylon and the stitching. Everything was free from any fraying or tears. The stitching as on the inside of the bag, meaning I didn’t have to flip the bags inside out. I had no trouble packing in the flower I used, it easily went down into the corners and filled in the bag.

Unfortunately, I wasn’t so impressed when I actually used the bags. The first one I used burst right open. I started off with high pressure, low temperature and it wasn’t able to handle the pressure I used. I packed a second bag and lowered the pressure. While there wasn’t a blowout that time, the bag did tear and the stitching also held in a good deal of my oil.


  • The price is pretty comparable to other bags on the market, even slightly less expensive than others I’ve tried.
  • Some of the returns I got on my successful presses using these bags were as high as 20%, which isn’t bad.
  • They seem to be washable. I washed a few of the ones that didn’t tear/blowout after using them and didn’t have any trouble using rubbing alcohol. As long as I didn’t heat my press too high or use higher pressures, the bags seemed to hold up just as well on second use.


  • The heat rating on these is already lower than other rosin press bags on the market, and from using them it seems like they can’t even handle 300 F as claimed. When approaching higher temperatures, the bags begin to rip and burst, which is never a good thing.
  • The bags also don’t seem to be able to handle extreme pressure. Again, as you increase the pressure, the chance of blowouts seem to increase as well. This makes pressing at lower temperatures more difficult as well, since the bags need to be under pressure longer in order to extract the oils.
  • These bags soaked up quite a bit of oil into the stitching, meaning my rosin yield was lower than it should have been.
  • The double stitching doesn’t seem to help with the blowouts. The bags that burst when I was using them burst right next to the seams, so while the stitching did remain intact, it was the material of the bag itself that failed.

Final Verdict

Unfortunately, these bags don’t seem to be as durable as marketed. Not only are they not as heat resistant as claimed, but they don’t hold up under pressure either. Those users who like to use higher temperatures to press aren’t going to be satisfied with these bags, nor are the high pressure fans. Even pressing at lower temperatures is going to be difficult, since the bags will be under pressure for longer and, for me, this resulted in a blowout.

In all, five of my 20 bags ripped, so 1 in 4 resulted in lost material. I wasn’t very happy with that at all. The ones that didn’t blowout performed fairly well, with moderate yields. They filtered well and the rosin produced was pretty clear, but a good amount of the oil also ended up in the seams of some of the bags. I was able to physically put a lot of material into the bags, but I ended up having to use less and less in order to avoid blowouts, which contributed to the bags holding in more oil in the end.

Overall, I’d say try some of the other bags on the market. You’re going to be able to find plenty for around the same price if cost is an issue for you. Even if you end up paying more, you’ll save money in the long run, as other bags on the market aren’t going to result in such a high amount of lost material due to blowouts and oil absorption.

Also, if you’re the type to scope out a rosin press then it’s probably best you give our filter bags guide a look over too. When spending on premium products it’s always best to do your research, so we’ve put as many reviews together as possible to help you make an informed decision.