How to Choose the Right Reusable Vacuum Bag Size

Choose a reusable vacuum bag by checking three things: the food’s dimensions, the portion you plan to use, and the space needed for the zip closure and valve to work cleanly. OpenClip bags come in Small 22 × 21cm, Medium 26 × 28cm, Large 26 × 34cm and XL 30 × 34cm. When uncertain, place the food beside the empty bag and allow comfortable sealing space rather than forcing a tight fit.

Start with the food’s shape, not its weight

Bag dimensions are more useful than a guessed weight capacity because foods pack differently. A flat portion of sliced bread, an irregular cut of meat and a container-shaped block of leftovers can occupy very different amounts of space even when they weigh the same.

Measure or visually compare the widest and longest parts of the food. Then allow room above the contents so the zip track can lie flat, the valve stays unobstructed and the bag is not stretched at the seams. If the food only fits when pushed into the corners, move up a size.

OpenClip reusable vacuum bag sizes at a glance

Size	Verified dimensions	Practical starting point
Small	22 × 21cm	Snacks, smaller portions and compact everyday ingredients
Medium	26 × 28cm	Meal-prep portions, leftovers and everyday food storage
Large	26 × 34cm	Larger portions and longer or bulkier ingredients
XL	30 × 34cm	Large portions and bulk food storage

These examples follow the current Shopify product descriptions; they are not fixed capacity promises. Food shape, thickness and the sealing margin still determine whether a particular item fits safely.

When the Small 22 × 21cm bag makes sense

The Small reusable vacuum bag is designed for snacks, smaller portions and everyday food storage. It is a useful starting point when you want to separate a larger purchase into compact servings or store a modest amount without leaving unnecessary empty bag area.

Think about portions such as a small serve of dry snacks, a compact amount of grated cheese, a few prepared ingredients or a single small cooking component. The exact fit depends on shape. Avoid packing sharp food edges against the bag, and do not cover the valve.

When to move up to Medium 26 × 28cm

The Medium reusable vacuum bag adds width and length for meal prep, leftovers and regular household portions. It can be a practical default when the Small size would leave too little room around the contents.

Medium suits the middle ground: food that is not especially bulky but needs room to lie flatter. A flatter pack can be easier to arrange in a fridge or freezer than a tightly stuffed one. Leave enough clear material at the top to close the zip fully and keep moisture away from the valve.

Choose Large 26 × 34cm for extra length

The Large reusable vacuum bag is 26cm wide like Medium but extends to 34cm long. That extra length can help with longer ingredients and larger food portions that fit the same general width.

Large may suit a bigger meal component, a longer cut or a group of ingredients intended for one recipe. Arrange food in an even layer where practical. A large bag is not a reason to combine foods that need different handling, cooking or thawing methods.

Use XL 30 × 34cm for the broadest fit

The XL reusable vacuum bag is the widest and equal-longest option in the range at 30 × 34cm. OpenClip positions it for large portions and bulk food storage.

Choose XL when Large is too narrow or when the food needs more room to sit without pressing against the seams. Before sealing, support the filled bag with both hands and check that its weight and shape are manageable. For very liquid foods, fragile items or sharp bones, a rigid food-safe container may be the better choice.

Why a bigger bag is not always better

Going straight to the largest size can create more unused material around a small portion and take up unnecessary storage space. The best size is the smallest one that holds the food comfortably while leaving a clean, workable sealing area.

Matching the bag to the expected meal also reduces the need to reopen a large shared pack. Portion food according to how it will actually be cooked or served, then label each bag clearly.

Allow space for the closure and valve

Do not treat the full external dimensions as usable food space. The zip track must close completely, and the valve must remain clear so a compatible handheld vacuum sealer can remove air as intended.

1. Place food below the valve and away from the zip track.
2. Wipe the closure area clean and dry.
3. Press the zip shut across its full width.
4. Position the compatible sealer squarely over the valve.
5. Stop and repack in a larger bag if the seams are strained or the closure will not lie flat.

All four OpenClip sizes use a reusable valve design and are listed as suitable for ClipOne and compatible handheld vacuum sealers. Follow the product and sealer instructions each time.

Match the bag to fridge, freezer or travel storage

Consider where the filled bag will go before choosing its size. Measure narrow freezer drawers, lunch coolers or camping food boxes if space is tight. A bag that fits the food may still be inconvenient if it must be folded over a valve or wedged against a sharp shelf edge.

For freezer use, arrange portions so they can freeze evenly and label the contents and date. Vacuum storage does not replace refrigeration, freezing or safe food handling. Keep raw and ready-to-eat foods separate, chill perishable foods promptly, and follow current Australian food-safety guidance.

Clean, dry and inspect before reuse

Current OpenClip product instructions for every size say to wash and dry the bags completely before reuse. Pay attention to corners, seams, the zip track and valve. Trapped moisture can interfere with storage and make the bag harder to assess.

Retire a bag if it is punctured, split, difficult to clean or unable to hold a seal. Do not keep using damaged packaging simply because the contents technically fit.

Frequently asked questions

What are the four OpenClip reusable vacuum bag sizes?

The current range includes Small 22 × 21cm, Medium 26 × 28cm, Large 26 × 34cm and XL 30 × 34cm. Each individual size product is sold as a five-pack.

Should I choose a bag by food weight?

Use the food’s actual width, length and thickness rather than relying on weight alone. Shapes pack differently, and every bag needs spare space for a clean closure and unobstructed valve.

What if the food fits but the zip will not lie flat?

Move up a size or reduce the portion. Do not force the closure, stretch the seams or cover the valve.

Can reusable vacuum bags hold liquids?

Liquids can interfere with the valve and closure. Follow the bag and sealer instructions; for loose liquids or foods likely to leak, a suitable rigid container may be more practical.

Do I still need to refrigerate or freeze vacuum-packed food?

Yes. Removing air does not replace temperature control or food-safety practices. Store each food at the appropriate temperature and follow current guidance for that food.

Choose a size with room to work

The simplest rule is to choose the smallest bag that holds the portion without crowding the zip, valve or seams. Start with the verified dimensions, consider the food’s shape and final storage location, then move up when the fit feels forced. Explore all four options in the OpenClip reusable vacuum bag collection and build a mix that matches the portions your household actually uses.