Ship glass the way the carriers test for it: a cap sealed and taped, a bag or liner with absorbent material, an insert that holds every bottle apart, a double-wall carton rated for the weight, and the label on top, because the carton will travel in every orientation. Cans skip the shards but not the carton rules. Product that must stay cold is a different operation, with insulated packaging and overnight services, and should be planned as one.
Why glass breaks in a parcel network
A parcel is not carried. It is tipped onto belts, sorted by machine, dropped on a corner, stacked under heavier parcels and set down hard at every handoff. The carton has to absorb all of that so the glass does not. Most breakage comes from a handful of causes, and each has a packing answer.
- Glass on glass. Two bottles that touch tap each other on every bump until a neck or a shoulder cracks. FedEx lists single corrugated partitions, loose-fill peanuts and wadded paper as unacceptable for glass bottles, as of October 2026, because partitions let bottles touch, peanuts settle and paper compresses.
- Corner drops and stacking. A drop puts its whole impact into the bottle nearest the corner, and a carton under load bows until the top row carries the weight. UPS and FedEx both call for at least two inches of cushioning between contents and carton wall, as of October 2026, and box strength handles the stack.
- Caps, leaks and temperature. Vibration backs a screw cap off, and one leaking bottle softens the carton for the rest of the case. Cold cracks a full bottle and heat raises pressure in carbonated product, so FedEx tells bottle shippers to avoid extreme temperatures and use an insulated box in summer, as of October 2026. Arrows are not honored either, so the pack-out has to work upside down.
The pack-out, from the bottle outward
Pack from the inside out, in this order. FedEx publishes its bottle guidance for wine shippers, but the physics do not know what is in the bottle. Alcohol has its own carrier approval and licensing rules, which this guide does not cover.
- 01Close the bottle twice. USPS requires screw caps turned at least one and one-half turns, as of October 2026. FedEx asks for an inner seal and a breakaway cap, and its liquids page says to tape a screw cap shut in an X because a lid can vibrate off, as of October 2026.
- 02Contain the leak. USPS requires breakable containers over 4 fluid ounces to be triple-packaged, as of October 2026: cushioning that can absorb all of the liquid, then a sealed leakproof bag or liner, then a strong outer box. UPS says to seal bottles in spill-proof bags, as of October 2026.
- 03Hold every bottle apart. For a case pack, use a molded pulp, molded polystyrene or die-cut double-wall corrugated insert that fits the carton snugly; FedEx's glass bottle packaging guide shows inserts in styles from 1 to 12 bottles, as of October 2026. For a single bottle, use the two-box method UPS and FedEx both publish, as of October 2026: two inches of bubble locked to the glass, an inner box, an outer box at least 6 inches larger each way, and 3 inches of cushioning between the two.
- 04Choose the carton for the weight, then go one grade up for glass. FedEx's bottle guide pairs every insert style with a 275# BC flute double-wall outer box, and UPS says never to exceed the gross weight printed on the Box Maker's Certificate on the bottom flap, both as of October 2026.
- 05Fill every void. A bottle that cannot move cannot gain speed before it hits something. Close the carton, shake it, and if anything shifts, add fill.
- 06Tape the H and reinforce the bottom. FedEx asks for at least three strips of tape at least 2 inches wide across flaps and seams, top and bottom, and its bottle guidance adds extra tape on the bottom, as of October 2026, because the bottom carries the weight at every drop.
- 07Label on top. FedEx puts the label on top to raise the odds of upright handling and says a This End Up mark does not keep a carton upright, as of October 2026. A Fragile mark is a mark, not a packing method.
- 08Test before volume. UPS and USPS both point to ISTA Test Procedure 3A, as of October 2026. The floor version is a test case shipped to yourself across the country and opened on arrival.
The carton rules in one table
The rules we hold a beverage pack-out to, from the carrier pages linked above, all opened in October 2026. The third column is what you need when a packaging vendor offers a cheaper insert.
| Rule | On the bench | Why it holds |
|---|---|---|
| Double-wall carton for any case pack | FedEx pairs every bottle insert with a 275# BC flute double-wall box | The carton takes the drop and the stack, not the glass |
| Every bottle held apart | Molded pulp, molded polystyrene or die-cut double-wall inserts, fitted snugly | Glass on glass is the first break; partitions, peanuts and paper are unacceptable to FedEx |
| At least two inches of cushioning | Bubble locked to the bottle plus void fill when there is no insert | A corner drop lands on the nearest bottle |
| Closure sealed twice | Cap at one and one-half turns or more, inner seal, tape in an X | Vibration backs caps off |
| Leak contained in the carton | Bag or liner plus absorbent for the full volume | One leak softens the carton for the rest of the case |
| Weight inside the box rating | Gross weight at or under the Box Maker's Certificate | An overloaded carton fails at the bottom seam |
| Label on top, any orientation | No reliance on arrows; the insert holds bottles in every position | Parcels are sorted by machine and stacked by hand |
Case packs and weight per carton
A case pack is also a postage decision, because postage is charged per shipment by carrier, service, weight and destination. Say your case is 12 bottles: one heavy parcel, while two cases of 6 are two lighter ones. Which costs less depends on your zones and weight breaks, so price three months of real orders both ways.
Weight sets the carton grade. The UPS box strength chart, as of October 2026, puts cartons up to 30 pounds on 200-pound burst or 32 ECT single wall, 31 to 50 pounds on 250-pound burst or 44 ECT single wall, and everything above 80 pounds on double wall. Glass gets double wall at any weight on our floor, because the chart is about containment and glass also needs the wall for the drop. Say a filled bottle weighs 1.25 pounds: a case of 12 is 15 pounds before the carton, the insert and the dunnage, and a case of 24 is 30 pounds, already at the top of the lightest grade.
Heavy cartons are set down harder. UPS requires a Heavy Package sticker above 50 pounds, FedEx Ground accepts parcels up to 150 pounds and USPS stops at 70 pounds, all as of October 2026. The floor rule is simpler: keep a case at a weight one person lifts comfortably all day.
Cans versus glass
Cans do not shatter, and a case of cans weighs less than the same case in glass, so breakage and postage both fall. Cans dent and puncture instead. A dented rim can leak, a punctured can empties into the carton, and a wet carton loses its strength for the rest of the case. So cans keep the carton rules and lose the glass insert. A shrink-wrapped tray is a retail pack, not a parcel pack: it goes inside a double-wall carton with a pad underneath, dunnage on top so the cans cannot ride up, and a snug fit so they cannot slide. Heat raises pressure in a carbonated can and a frozen can splits, so the temperature rule holds.
Cold chain: what a parcel can and cannot do
A chilled beverage on a ground lane is not a cold chain, whatever is in the box. From Elmwood Park, ground reaches the Northeast in 1 to 2 business days and the rest of the country in about 5. If the product has to stay cold for all of that, the pack-out changes completely.
FedEx's perishables guidance, as of October 2026, is the shape of it: an insulated foam container with walls at least 1-1/2 inches thick inside a corrugated outer box, gel packs for chilled product and dry ice for frozen, liquids double-bagged in watertight plastic with absorbent material, an overnight service, shipping early in the week, and coolant for at least 24 hours beyond the delivery commitment. Dry ice is a hazardous material for air transport with its own labels and paperwork. The insulated box is bigger and heavier than the product, and postage follows weight and service.
The plain version: shelf-stable product ships by ground in the pack-out above. Product that must stay cold ships overnight in insulated packaging, at a different cost per order. Climate-controlled storage is available on our floor, with the specifics set case by case in your proposal, so say what the product needs in the intake.
How glass and beverage ship on our floor
Drink Palestina and Jabal ship from this floor. Glass and cans are received by lot and packed for transit, and beverage and food-grade fulfillment runs on rules that are set once and followed on every order.
The packing rules are mapped into the WMS during onboarding: case sizes, the insert for each, the carton, orientation and what goes in the box. Packing standards are written for heavy, breakable cases. Every unit is scan-verified against the order before it goes in the box, which is how pick and pack error stays under 0.3% across the floor.
Lot and expiry are captured at receiving for beverage and food-grade goods, and picking runs first-expired-first-out from the first order, so the oldest sellable lot ships first; see lot tracking and FEFO. Receiving is billed hourly, so a labeled inbound with the lot on the packing list takes fewer hours than a mixed pallet; see how to send inventory to a 3PL.
Cartons, inserts and dunnage are billed as used, your own branded cartons and inserts are welcome, and packaging sourcing is available. Handling is an estimated $3.00 per order as the baseline, and heavy, breakable case packs are a profile we price in the quote against the rate card. Orders in by 12pm ET ship the same business day. Returns come back to the same floor at an estimated $3.00 per parcel, received, graded, then restocked or set aside per your policy.
The glass and beverage packing checklist
- Cap turned down fully, inner seal in place, tape in an X on any closure that can back off.
- Bottles bagged or the case lined, with absorbent material for the full volume.
- An insert that holds every bottle apart. No single partitions, peanuts or wadded paper.
- Double-wall carton sized to the insert, pad in the bottom, gross weight under the Box Maker's Certificate, nothing moves on the shake test.
- H-taped top and bottom, three strips at least 2 inches wide, bottom reinforced, label on top.
- Cans: tray inside a double-wall carton with a pad, dunnage on top, snug fit.
- Cold product: insulated container, coolant and an overnight service, or a decision not to ship it cold.
- A test case opened on arrival across the country, or an ISTA 3A report from the insert supplier.
- Packing rules written down and sent with the SKU list, so the 3PL maps them before the first inbound.
Questions beverage brands ask before they ship glass
Is bubble wrap enough, or do I need an insert?
For a single bottle, at least two inches of bubble locked to the glass, or the two-box method, is what the carriers publish. For any case pack, use an insert that holds every bottle apart. FedEx names single partitions, loose peanuts and wadded paper as unacceptable for glass bottles.
Can you ship my drinks cold?
Climate-controlled storage is available, with the specifics for your product set case by case in your proposal. Shipping cold means insulated packaging, coolant and overnight services, a different cost per order from shelf-stable ground. Say what the product needs in the [intake](https://intakes.ynkincubator.com/?utm_source=ynkincubator.com&utm_medium=site&utm_campaign=guide-shipping-glass-and-beverage) and we quote it that way.
What does a 3PL need from me to pack glass right?
Your packing rules in writing: case sizes, the insert for each, the carton, orientation and what goes in the box, plus your packaging or a spec to source it, and lot and expiry on every inbound packing list. We map those into the WMS during onboarding, and most brands are live in under two weeks.
Related: Beverage and food-grade fulfillment · How to send inventory to a 3PL · How 3PL returns processing works