Keeping costs down usually comes from smart packaging and the right service speed.

• Go lighter: Use poly mailers for soft items (like apparel). They’re slim and can help reduce weight-based fees.
• Right-size your packaging: Choose a snug mailer or box to avoid dimensional weight charges.
• Pick slower speeds: Economy or standard delivery is typically more affordable than expedited options.
• Weigh and measure: A small scale and a quick measurement can help you choose a lower-cost rate tier.
• Buy in multipacks: Stocking up on self-seal mailers, padded envelopes, or boxes at Walmart can lower per-piece costs.

Results can vary by item and destination, but these steps can help.

Your own box can be more cost-effective when you’re shipping lightweight, compact items that are billed by weight and size rather than a flat fee.

• Light and small: A snug, right-sized box can help you avoid dimensional weight and keep charges down.
• Flat-rate scenarios: Carrier-provided flat-rate packaging can be a better value for heavy or dense items traveling long distances.
• Protection vs. weight: Add only the cushioning you need to protect the item without overbuilding the parcel.
• Measure first: Check weight and dimensions before purchasing postage so you can compare options.

Policies vary by service type, so it’s a good idea to review packaging requirements before you ship.

Most budget-friendly options trade speed for savings. The best fit depends on your item and timeline.

• Economy/standard services: Slower speeds usually cost less than expedited delivery.
• Light parcels: For small, lightweight items, entry-level parcel or mail services tend to be more affordable than premium tiers.
• Flexible packaging: Soft goods often ship cheaper in poly mailers than in boxes due to lower weight and volume.
• Shorter distances: Shipping closer typically costs less than cross-country trips.

Weigh and measure your package, then compare available service levels. Choosing the smallest practical packaging from Walmart’s mailers and boxes can further reduce costs.

Pick a mailer size that fits snugly without overstuffing. Here’s a quick guide many shippers find helpful:

• T‑shirts and leggings: Around 10" x 13" poly mailers.
• Jeans, sweaters, light hoodies: About 12" x 15.5" poly mailers.
• Bulkier items or multiple pieces: Approximately 14.5" x 19" mailers.

Tips:

• Press out excess air to keep dimensions down.
• Choose thicker mailers for heavier fabrics; many customers look for around 2 mil thickness.
• Double-bag if you need extra protection, or step up to a padded mailer if there are zippers or hardware.

Walmart stocks self-seal options in these common sizes.

Match the mailer to what you’re shipping to balance protection and cost.

• Poly flexible mailers: Great for apparel and other soft, non-fragile items. They’re lightweight and space-efficient.
• Padded mailers (bubble or honeycomb): Better for small items that need cushion—think accessories, small electronics, or cosmetics in retail packaging.
• Kraft bubble mailers: Add a bit more stiffness for items that shouldn’t bend.
• Stay-flat document mailers: Useful for photos, prints, or documents you want to keep flat.

If in doubt, start with the lightest option that still provides adequate protection. Walmart offers all of these styles in multiple sizes with self-seal closures.