# Care Package Supplies: Tape, Bags, a Scale

> Two-inch tape on every seam, resealable bags around every liquid, and a scale that reads ounces: the three care package supplies that get the box there intact.


# Care Package Supplies: Tape, Bags, a Scale

**In short:** A care package is a shipping problem before it is a gift. The supplies that matter are the ones that get the box there closed, sealed, and correctly weighed. Buy two-inch pressure-sensitive tape, resealable bags sized to your food and liquids, and a scale that reads in ounces. Everything else is decoration.

> We write buying guides, not product reviews: we have not used every supply on this page, and specs come from the manufacturer or the listing. Whatever Amazon shows when you click is the authoritative figure.

Every care package fails in one of three places. A seam splits under handling, a bottle leaks onto the cookies, or the weight at the counter is double the guess. The three picks below each close one of those gaps. For what goes inside once the box is sound, see our pillar guide, [Care Package Ideas That Survive the Trip](/care-package-ideas/).

One rule runs through every pick: a supply earns its place by doing a shipping job, not a decorative one. Tape, bags, weight.

## Packing tape: buy adhesion, not decoration {#packing-tape}

A box that arrives open is a failed care package, whatever was inside. [USPS Publication 52](https://pe.usps.com/text/pub52/welcome.htm) sets the bar for closing tape: at least two inches wide, pressed onto every seam. Gift-wrap tape often runs narrower, so read the stated width on the listing, not the photo.

Paper packing tape is our default over thin plastic film. It grips cardboard fiber instead of sitting on top of it, and a torn end does not curl back the way cheap film does. One more USPS rule: no string or twine on the outside, which snags sorting equipment. The ribbon goes inside the box.

## Resealable bags for liquids, powders and snacks {#resealable-bags}

Every bottle, jar and powder goes in its own sealed bag. That is the whole rule. Caps work loose under vibration, and one leak coats everything else, so a bag is the cheapest insurance in the parcel.

The threshold worth knowing is four ounces. Once a liquid container tops that, [the same publication](https://pe.usps.com/text/pub52/welcome.htm) tightens its packaging rules, and a 2026 [Postal Bulletin revision](https://about.usps.com/postal-bulletin/2026/pb22700/html/updt_004.htm) tightened them further for certain mailable dangerous goods. Anything pressurized or battery-powered deserves a read of the current text before it goes in a box.

Skip the bag only for factory-sealed, shelf-stable food that cannot leak. What a bag cannot do is legalize a restricted item. Alcohol, aerosols and prescription medication carry their own USPS restrictions, so check before packing them at all.

## Flat-rate or pay-by-weight: let the scale decide {#flat-rate-or-pay-by-weight}

A small shipping scale turns the box question from a guess into arithmetic. Flat-rate boxes ship at one published price regardless of weight, up to a 70-pound ceiling USPS sets. Every other box is priced by weight, so the scale's reading is the decision.

Weigh the packed box at the kitchen table, before the tape comes out. A sealed box is a number you cannot change cheaply.

| Box choice | When it wins | What you pay | What to watch | Editorial call (ours) |
|---|---|---|---|---|
| Flat-rate box | Dense, heavy loads: jars, sauces, books | One published price per box size, whatever it weighs | The 70-pound ceiling still applies; small boxes fill fast | Our call: flat rate for most food-heavy boxes |
| Pay-by-weight | Light, bulky loads: clothing, pillows, paper | A price that scales with weight and distance | Counter surprises if you guess the weight | Our call: pay-by-weight when the box is big and light |

> **Our take:** Our call is flat rate for most care packages, because the usual load of food, jars and toiletries is exactly the dense cargo that weight-based pricing punishes. Pay-by-weight wins when the box turns bulky and light, and a gift card inside adds no ounces to either math. The scale makes that call before you spend a dollar.

Our suggested pre-tape checklist, to adapt freely:

1. Bag every liquid, jar and powder in its own resealable bag.
2. Heaviest items on the bottom, padding between layers.
3. Fill the empty space so nothing shifts when the box tips.
4. Weigh the open box and compare flat-rate against pay-by-weight.
5. Run two-inch tape over the center seam and both edge seams, top and bottom.
6. Leave twine and ribbon off the outside.

## What to check on any care package supplies listing {#check-the-listing}

Three checks before you buy. The listing states the tape width in inches, the bag's material thickness, and the scale's capacity and increment; confirm each in the spec line, not the photo. Current mailing rules live on [the same study](https://pe.usps.com/text/pub52/welcome.htm). The destination's own rules come before any of it: a dorm, a hospital unit and a deployed address all accept different things.

If the supply run feels like too much, a pre-made care package can replace it, though you inherit someone else's packing choices. New to the term itself? [What Is a Care Package?](/what-is-a-care-package/) covers the definition and the basic rules.

## Care package supplies FAQ {#faq}

### How much packing tape do I need to secure a care package?

Count six runs per box: the center seam plus both edge seams on top, then the same three on the bottom. Two inches wide every time. One roll seals far more boxes than most people send in a year.

### What size resealable bags should I use for liquids and food in a care package?

Quart-size bags fit most lotion bottles and snack portions; gallon bags take glass jars, and glass gets a second bag around the first. Sandwich bags hold tea and powder packets. If the zipper cannot close with an inch to spare, size up.

### What capacity should my shipping scale have for weighing care packages?

Our suggested spec is a 22-pound platform with one-ounce increments, which covers any parcel a household ships. The increment matters more than the ceiling, because carriers round weight up when they price a box. A bathroom scale is the wrong tool at these weights.

## Sources {#sources}
- United States Postal Service — "Publication 52 - Hazardous, Restricted, and Perishable Mail" (https://pe.usps.com/text/pub52/welcome.htm) "Retrieved 2026-09-04".
- United States Postal Service — "Publication 52 Revision: Certain Mailable Dangerous Goods Requirements" (https://about.usps.com/postal-bulletin/2026/pb22700/html/updt_004.htm) "Retrieved 2026-09-04".
- United States Postal Service — "Welcome | Postal Explorer" (https://pe.usps.com/) "Retrieved 2026-09-04".


## Products in this category

- **Resealable storage bags** — Every bottle, jar and powder in the box goes in its own sealed bag. USPS packaging rules for liquids over four ounces are stricter than most senders expect, and a bag is the cheapest insurance in the parcel. ([View on Amazon](https://www.amazon.com/s?k=resealable+storage+bags&tag=webs0ae-20))
- **Paper packing tape** — USPS asks for two-inch-wide tape on every seam, and asks you not to wrap a box in string or twine, which snags in the sorting equipment. Tape the seams and keep the ribbon inside. ([View on Amazon](https://www.amazon.com/s?k=packing+tape&tag=webs0ae-20))
- **Small shipping scale** — Flat-rate boxes still carry a 70-pound ceiling, and everything else is priced by weight. Weighing at the kitchen table beats discovering the number at the counter. ([View on Amazon](https://www.amazon.com/s?k=small+shipping+scale&tag=webs0ae-20))

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