This detailed comparison analyzes Costco's Kirkland Signature vacuum sealer bags against the popular FoodSaver brand. Both brands were rigorously tested for seal strength, durability, and ease of use, providing a comprehensive look at their performance characteristics. We examined everything from the initial unboxing experience and bag features like markings and roll size, to the crucial aspect of seal quality and overall durability under pressure. This side-by-side review focuses on identifying key differences and highlighting the advantages and disadvantages of each product to help consumers make informed purchasing decisions based on their individual needs and priorities.Our tests involved heat-sealing, vacuum-sealing with black beans, and a drop test to assess durability. We meticulously compared seal strength, roll size, and the overall handling experience. The results reveal remarkable similarities in performance, but also highlight significant differences in price, roll length, and included accessories. This comparison aims to determine whether the significant cost savings offered by Kirkland justify any potential inconveniences associated with its larger roll size, ultimately helping you decide which brand best suits your needs and budget.
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Unboxing and Initial Impressions
Upon unboxing both the Kirkland Signature and FoodSaver vacuum sealing bags, the initial impression was one of similarity. Both felt equally thick and durable. The texture on the bottom of each bag was practically identical, leading to a strong suspicion that they might share a common manufacturing origin. The packaging, however, was quite different. FoodSaver bags came with three-inch increment markings, facilitating easier measurement when cutting. The Kirkland bags had less visible markings, requiring a closer look.

The FoodSaver bags also offered more prominent writing space on the outside of the bag. An interesting note was the presence of a production date (August 2022) on the Kirkland bags but none visible on the FoodSaver bags. While not a major concern, this could be relevant for checking bag freshness if stored for extended periods.

Seal Strength and Performance
To test the seal strength, an eight-inch section of each bag was heat-sealed using the FoodSaver machine. The resulting seals were remarkably similar – clean, even, and about a quarter-inch thick. Both bags exhibited no problems with the heat seal process itself.


Next, one-pound packages of black beans were vacuum-sealed in both types of bags. Both Kirkland and FoodSaver bags created virtually identical, airtight seals with no noticeable difference in vacuum performance. The machine itself worked smoothly throughout the process.


Roll Size and Practicality
A significant difference emerged concerning roll size. The Kirkland bags came in 16-foot rolls, significantly longer than the original 8-foot roll included with the FoodSaver. While offering more bags per roll, the longer length presented a minor inconvenience – it required extra effort to manage the roll within the FoodSaver machine's design, requiring more manual adjustments and stronger pressure on the lid.

This makes it a more cumbersome process compared to the FoodSaver's original roll size. It's not a deal-breaker, but an additional step to consider. The extra length and the pre-cut quart bags in the Kirkland package provide value for some users.
Durability Test and Final Verdict
A drop test was conducted to assess the bags' durability. Both bags withstood the drop without tearing or compromising their seals. This shows the bags are robust, even with rough handling.

Ultimately, both the Kirkland Signature and FoodSaver vacuum sealing bags performed exceptionally well in this test. The seals were virtually identical in quality, strength and appearance. The Kirkland bags offered a significantly lower price point ($24 versus $45 for FoodSaver), with the added bonus of 50 pre-cut quart bags. The larger roll size is a minor drawback for the Kirkland bags for some users.

Conclusion: Which Bags Are Best?
Based on this comparison, the Kirkland Signature vacuum sealing bags from Costco present an exceptional value. While performance is on par with the FoodSaver brand, the price difference is substantial. The added convenience of pre-cut quart bags further enhances their appeal. If you are willing to sacrifice a bit of ease of use with the larger roll, the Kirkland Signature bags provide significant cost savings while maintaining excellent seal quality.
Consider your priorities. If you need smaller rolls for easier handling in your machine, and the extra cost isn't a major concern, FoodSaver might be better suited. If saving money and having extra pre-cut bags are high on your list, Kirkland is the clear winner.