How the Five Compare on the Numbers
Cold brew filters are sold by the inch, and the inch tells you almost nothing about the batch. What tells you the batch is the sentence each maker writes about what goes inside: a cup count of grounds, a jar size in ounces, or a weight of coffee. These five publish all three kinds of answer, and they do not convert into one another.
The range is wider than it looks. One of these is a 4 by 6 inch pouch for a 32 ounce jar and another holds up to 20 lbs of grain in a kettle up to 17 inches across. Between them sit a 50-count disposable rated at 2 to 3 cups of grind, a stainless cone built for one 64 ounce jar, and a cotton bag stated to hold a full pound.
What the table cannot tell you is how any of these figures was arrived at. A pound of coarse grounds and two to three cups of grind are not the same unit, and nobody publishes a grind weight per cup to connect them. The 20 lbs on the bellamei bag is a grain weight for beer brewing, not a coffee figure, and this page treats it as what the maker says it is.
Three Ways of Describing a Batch
Cups of Grounds and Pounds of Coffee
HRX Package states that its 6 by 10 inch bag holds 2 to 3 cups of coffee grind and suits 64 oz mason jars or 1 gallon pitchers, which is the most directly useful pairing on this page: a volume of grounds and the vessels it belongs in. It arrives as 50 disposable bags.
Doppeltree states that its 12 by 12 inch cotton bag holds a full pound of coarse-ground coffee with room to spare, and names Toddy cold brew systems, wide mouth mason jars and glass pitchers. A pound is the standard unit a batch brewer actually buys coffee in, which makes it the easiest figure here to plan from.
Jar Sizes Instead
URCYLA and Fermus both describe the vessel rather than the coffee. URCYLA states a 4 by 6 inch pouch that fits a 32oz mason jar and ships 120 of them. Fermus states a stainless infuser for a 64oz, 2 quart wide mouth mason jar, and publishes the cone itself: two inches at the base, three and a quarter at the top and eight and a half tall on the flange.
Neither says how much coffee goes in. On a jar-shaped product that is almost reasonable, because the jar sets the water and the grounds follow, but it leaves a batch brewer working backwards. The Fermus figures are the most detailed object description on this page and still contain no grounds capacity.
The Outlier, and Why It Is Here
A Beer Bag in a Coffee Pool
bellamei publishes 22 by 26 inches of 250 micron nylon mesh that holds up to 20 lbs of grain and fits kettles up to 17 inches in diameter, and its listing is written for all-grain beer brewing by the brew-in-a-bag method. It also names jams, cold brew and cider among its uses, which is how it ends up in this pool.
For a genuinely large cold brew batch it is the only filter here with the volume, and it is the only one that publishes a mesh figure at all. It is also the wrong shape for a mason jar and the wrong tool for anyone making two quarts at a time. Read it as what it is and it is useful; read it as a coffee filter and it is oversized.
What the Mesh Figure Changes
250 micron is a coarse mesh by cold brew standards and the listing is explicit about why: it exists to keep grain out of wort, not fines out of concentrate. None of the other four publishes a micron rating, a mesh count or a weave density, so there is nothing here to compare it against.
That silence is the pattern across this whole pool rather than a fault of these five. Three of the other four describe their mesh only as fine and Doppeltree never describes it at all, which on a product whose entire job is particle separation is the figure most worth having and the one least often printed.
Reusable, Disposable and the Cost of a Batch Habit
Two Hundred and Seventy Bags Against Four
URCYLA ships 120 pouches and HRX Package ships 50, both disposable and both saving you the wash. Doppeltree and bellamei each ship two reusable bags, and Doppeltree makes the rotation argument directly: two bags so one steeps while the other dries, so you are never waiting. Fermus ships a single stainless cone.
For someone brewing three or four batches a week the arithmetic differs by product rather than by principle. A 120-count box is a few months of brewing and then a reorder. Two cotton bags and a stainless cone are a one-off, provided the care instruction is followed, and only two of these five publish one.
What Happens After the Steep
Doppeltree publishes the fullest routine: dump the grounds, rinse under the tap, give it a squeeze and hang to air dry, with hand washing between uses to preserve the cotton fibers. Fermus publishes a method too, saying the diffuser is easy to rinse by turning it upside down and running water over the outside.
bellamei says only that nylon is very easy to clean. URCYLA and HRX Package publish nothing, which on a disposable bag is defensible. The useful comparison is that the two reusable cloth and steel options both tell you what to do, and the one reusable nylon option does not.
Which One Fits Your Kitchen
One jar at a time, no washing up. URCYLA publishes a 4 by 6 inch drawstring pouch for a 32oz mason jar and ships 120 of them in food-grade non-woven fabric. No grounds capacity is stated, so the jar is the only guide.
Half gallon jar, nothing to throw away. Fermus publishes a 304 stainless cone for a 64oz, 2 quart wide mouth jar, two inches at the base and eight and a half tall, sealed with silicone rings on the cone and lid.
Knows how many cups of grounds it uses. HRX Package states 2 to 3 cups of grind in a 6 by 10 inch bag for 64 oz jars or 1 gallon pitchers, 50 disposable bags, and is the only pick here cleared for hot brewing too.
Buys coffee by the pound. Doppeltree states a full pound of coarse grounds in a 12 by 12 inch organic cotton bag at 0.03 lb, with two bags so one dries while the other steeps, and a full care routine.
Brewing far more than a pitcher. bellamei publishes 22 by 26 inches of 250 micron nylon for up to 20 lbs of grain and kettles to 17 inches. It is sold for all-grain beer brewing, and it is the only mesh figure on this page.
What We Could Not Verify
These are the figures we went looking for on the manufacturer listings and did not find.
- A grounds capacity for the URCYLA and Fermus filters, both of which describe the jar instead.
- A mesh or micron figure for four of these five. Only bellamei publishes one.
- Any way to convert a cup of grind into a weight of coffee. No listing gives one.
- A weight for the URCYLA and Fermus filters.
- Whether the Doppeltree cotton bag or the bellamei nylon bag may be used with hot water.
- A care instruction for the bellamei bag beyond the claim that nylon is easy to clean.
