Syntus 150 Pre-Cut Vacuum Sealer Bags, 3 Sizes

What the maker puts in writing

• “Compatible with All Desktop Vacuum Sealers… (Note: These bags do not feature an air valve and are not compatible with handheld vacuum sealers.)”
• “PreCut Design: This package contains 150 precut vacuum bags in three convenient sizes: 50 each of 11” x 16” (gallon), 8” x 12” (quart), and 6” x 10” (pint). Just pull one out and start sealing, no cutting or pre-sealing required.”
• “Puncture-Resistant & Airtight: Crafted from 4 mil high-tenacity material with a single-side textured dot pattern, these bags enhance suction, prevent bone punctures, and maintain an airtight seal”
• “BPA Free… Suitable for microwave oven, cabinet, fridge, or freezer storage, in addition to boiling, sous vide cooking, and more.”
• “Wide Range of Application: …storage for vegetables, seafood, ribs, beans, and pills”
• Reference VSB150 · Catalog: 1860 g (65.6 oz)

Four mil, and nobody else publishes a thickness

A mil is a thousandth of an inch, so 4 mil is about 0.1 mm — roughly twice a heavy freezer bag, and the usual standard for vacuum film.

It matters because of what actually goes wrong. Vacuum bags rarely fail at the seal. They fail by puncture, and they fail at the moment you vacuum them, because the film is being pulled tight onto whatever is inside. A rib bone, a fish fin, a frozen edge or a shard of shell goes straight through.

Bullet three names it — “prevent bone punctures” — and the Wevac at $20.99 names the other answer: a separate “Bone Guard Included” in the box.

The habit either way: wrap a sharp bone in a fold of kitchen paper before sealing.

What the rest of the shelf offers in place of a number: the xinbaolong at $16.99 claims “puncture prevention technology”; the FoodSaver at $29.89 “Prevents Food Damage”; the Wevac “HEAVY DUTY AND PUNCTURE PREVENTION”. Three claims, no figures.

So a published 4 mil is real information, and it is the figure to check against your own machine — a sealer has a maximum thickness it can melt through, and a film too heavy for it will not seal at all.

It tells you what it will not work with

“(Note: These bags do not feature an air valve and are not compatible with handheld vacuum sealers.)”

No other listing on this shelf states an incompatibility, and this one is the single most useful sentence here, because the shelf contains two entirely different products.

A desktop sealer clamps the open mouth of the bag, draws air out through it, then melts the film shut with a heated wire. The bag is single use. There is no valve, because the seal is the closure.

A handheld pump has nothing to melt. It docks onto a one-way valve molded into the bag wall, draws air through it, and the bag closes with a zipper.

The Wonzlling at $27.99 is that second kind, and says so: “The built-in air valve helps remove excess air… close the double zipper, and use a compatible vacuum pump or vacuum device to remove air through the valve.”

The other three — the xinbaolong, the Wevac and the FoodSaver — are heat-seal film like this one, and all three assume you know.

Check which machine you own before buying anything on this shelf.

The dot pattern, which is the condition a suction sealer needs

“a single-side textured dot pattern, these bags enhance suction.”

This is not decoration, and it is why a smooth bag will not work.

A suction sealer pulls air out through the open mouth. With smooth film, the two walls collapse against each other at the mouth within a second and seal off the air behind them — the pump keeps running and nothing more comes out. You end up with a tight neck and a bubble of air around the food.

The texture holds the walls apart so air keeps flowing from the far end of the bag.

“Single-side” is the detail worth noticing: only one face needs it, and that face goes against the other.

The Wevac is the only other listing to say it, with “embossed channels to increase suction”. The xinbaolong and the FoodSaver say nothing — and both sell for suction machines, so both are textured by necessity and simply do not publish it.

Smooth film works only in a chamber sealer, which evacuates the whole box rather than the bag and is a commercial machine.

A hundred and fifty bags, and the most film on this shelf

Three sizes, fifty of each:

11” × 16” — gallon, 176 in² each 8” × 12” — quart, 96 in² each 6” × 10” — pint, 60 in² each

50 × 176 + 50 × 96 + 50 × 60 = 16,600 square inches, which is the most total film on this shelf — and at $20.99 that is 0.126 cents a square inch.

The shelf:

xinbaolong, $16.99 — 0.124¢/in², 13,680 in² in six rolls this — 0.126¢, 16,600 in² Wevac, $20.99 — 0.159¢, 13,200 in² FoodSaver, $29.89 — 0.294¢, 10,176 in² Wonzlling, $27.99 — 0.380¢, 7,368 in², but reusable

So this is level with the cheapest roll on the shelf and gives more total film than any of them — which is the opposite of what you would expect from a pre-cut pack, and the main reason to prefer it.

The three sizes cover the common cases well. Gallon for a chicken or a rack of ribs; quart for a steak, a fillet or a portion of stew; pint for herbs, nuts, spices or a single piece of fish. And having fifty of each rather than a hundred of one is the right distribution for a household.

The limit is the sixteen inches. Nothing here is longer, so a side of salmon, a long rack or a baguette needs a roll — and a roll has no maximum length.

Microwave, boiling and sous vide

“Suitable for microwave oven, cabinet, fridge, or freezer storage, in addition to boiling, sous vide cooking, and more.”

The boiling and sous-vide claims are the ones that go beyond storage, and they matter on this site: the sous-vide shelf carries fourteen immersion circulators, from the Anova Nano 2.0 to the Breville Joule Turbo and five KitchenBoss models. Every one of them needs a bag that will sit at 55 to 85 °C (131 to 185 °F) for hours without delaminating or leaching, and a sealed bag is the normal way to run one.

4 mil is the right weight for that job, because a long immersion softens film and a thin bag can creep at the seal.

Microwave matters for the other half of the cycle: reheating a portion in the bag it was frozen in, which is most of the point of portioning in the first place.

The one condition nobody on this shelf publishes is a temperature limit. “Boiling” implies 100 °C and sous vide runs well below it, so the claim is comfortable — but no listing here gives a figure, and none says whether the bag may be opened and resealed.

And the application list is the oddest part of the page: “vegetables, seafood, ribs, beans, and pills”. Pills is an unusual inclusion and a legitimate one — vacuum film keeps moisture out of anything, which is why the Wevac description extends its own list to “gardening, tea leaves, documents and electronics”.

What is not published

No country of manufacture, where the FoodSaver says “Proudly manufactured in the United States” and the Wevac says “made in China to US quality standards” — a candour worth noting in both directions.

No named machines. “All traditional desktop vacuum sealer machines” is a category rather than a list. The Wevac names six: “Food Saver, Seal a meal, Nesco, Weston, Cabela’s, Ziploc”. The FoodSaver names its own systems.

No maximum seal width stated, which is the figure that decides whether the 11 inch bags fit your machine. Eleven inches is the common domestic maximum, so most sealers will take them — but a narrower one will not, and then a third of this pack is unusable.

No temperature limit, as above.

No reusability claim. These are single-use bags, which is the honest position for heat-seal film: the Wonzlling is the only reusable product on this shelf, and its cost per use is the figure that eventually beats everything here.

No guarantee, where the Wevac offers a “no questions return policy”.

No bone guard, where the Wevac includes one — and this page names bone punctures as the risk.

Availability

Read on the day this page was built: $21 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.