How to pack and ship diabetic supplies for a mail-in sale

Packing matters more than most people realize. The most common reason an offer gets reduced after inspection isn't that the supplies were misrepresented — it's that they arrived damaged from poor packing. Here's how to do it right.

Step 1: Get the right box

Use a sturdy cardboard shipping box — not a padded envelope, not a plastic mailer, not a reused grocery bag. Padded envelopes are the most common packing mistake. They don't protect corners, they get crushed in transit, and a crushed CGM sensor box can void your offer entirely.

USPS Priority Mail boxes are free and available at any post office or USPS.com — and since we send Priority Mail labels, you're already set. A medium flat-rate box works well for most shipments. Make sure it's a USPS Priority Mail box if you're using a Priority Mail label — USPS requires matching box type to label type.

Step 2: Wrap each box individually

Wrap each product box in a single layer of bubble wrap or packing paper. This protects corners and prevents boxes from sliding into each other. If you don't have bubble wrap, a folded sheet of newspaper or a few layers of paper towels around each box works.

Do not use loose packing peanuts as the only cushioning — they shift in transit and leave boxes unprotected.

Step 3: Layer with cushioning

Line the bottom of the shipping box with 2 inches of cushioning (bubble wrap, packing paper, or newspaper). Place your wrapped product boxes in. Fill any empty space around and on top with more cushioning so nothing can shift. The product boxes should not be able to move when you shake the shipping box.

Step 4: Seal firmly

Use packing tape — not duct tape, not masking tape, not scotch tape. Run tape along every seam on the top and bottom. The box should feel solid with no flex at the corners.

Step 5: Apply the label correctly

Print the prepaid label we email you and tape it flat to the largest face of the box. No folds over edges. Make sure the barcode is visible and unobstructed. If the label is printed on regular paper, cover it with a clear strip of tape to protect it from moisture — but don't cover the barcode.

Step 6: Drop off at USPS

Take the sealed, labeled box to any USPS location or leave it with a mail carrier. You can also schedule a free USPS pickup at usps.com if you'd rather not go to the post office. Get a receipt or drop-off confirmation — the tracking number on your label will activate within a few hours of drop-off.

What NOT to do

• Don't ship in a padded envelope — boxes get crushed
• Don't let product boxes touch the walls of the shipping box directly — they need cushioning buffer
• Don't put supplies loose in the box without their original retail packaging
• Don't tape over the barcode on the shipping label
• Don't use a box that's significantly larger than your supplies — a lot of empty space means a lot of shifting