Sealock manufactures the insulated soft cooler tote bag for food delivery that restaurants, delivery fleets and platform operators source by the hundreds. A delivery bag is not a picnic cooler used a few times a summer — it runs dozens of trips a day, holds hot and cold orders that cannot arrive lukewarm, gets wiped down between runs, and carries a brand's name through every doorstep. That workload sets a higher bar on insulation, food-safe lining, leak control and durability, and the bag below is built to it.

What Food Delivery Demands From a Tote

A bag that survives weekend picnics will not survive a delivery shift. Operators evaluating a tote for a fleet should hold it against four hard demands:

• Holds temperature both ways: the same insulated wall keeps a hot meal hot and a cold drink cold across a 20–30 minute run.
• Food-safe and easy to sanitize: the lining touches food packaging all day, so it has to be food-grade and wipe clean between orders.
• Contains spills: soups, sauces and drinks tip in transit, so the body must keep a leak off the next order and the courier's vehicle.
• Survives high-frequency use: opened and closed dozens of times a shift, the zipper and seams have to outlast a single season.

Those four points separate a true food-delivery tote from a generic insulated bag re-labelled for the job.

The Maker: Sealock

A delivery bag carries a brand to the customer's door, so the factory behind it has to be one that builds for repeat, food-contact use. Sealock is the cooler brand of YiFuLong Outdoor Gear Co., Ltd., welding insulated soft bags since 2003.

How the Tote Holds Heat, Cold and Up to Daily Abuse

The bag is engineered around the two things a delivery operator cannot compromise on: temperature and hygiene.

The Insulated, Food-Safe Three-Layer Body

The tote runs a TPU / HF-welded outer shell, an EPE foam core and a food-grade PEVA (or TPU) liner. The foam wall works in both directions, slowing heat loss from a hot order and heat gain into a cold one, while the food-safe liner sits safely against food packaging and wipes or rinses clean between runs — the hygiene step a delivery bag needs every shift, not every season.

Welded Seams, Sealed Closure and Tested Hardware

Stitched bags leak through needle holes; this one uses HF-welded seams so a tipped soup stays inside rather than soaking the next order. Sealock bench-tests every design before it ships: a 1,500-plus-cycle load test on the handle and body, a 3,000-cycle zipper test on the closure, and a full water-immersion test on sealed builds, so a bag that runs dozens of trips a day keeps sealing and cold.

The Insulated Soft Cooler Tote Bag: Specifications

Confirmed parameters for the lead model, the Insulated Soft Cooler Tote Bag:

Exact dimensions are confirmed at sampling; size, depth and carry can be built to a fleet's order profile on custom runs.

Companion Models for Specific Delivery Loads

Different orders call for a different bag. These sister models cover the rest of a delivery lineup, all with real specs:

Quality Control for Daily-Use Delivery Bags

A delivery bag fails in front of a paying customer, so Sealock's checks target the points that matter for food contact and high-frequency use:

1. IQC (incoming): TPU shell, food-grade PEVA/TPU liner and EPE foam are verified for thickness and food-contact safety before cutting.
2. IPQC (in-process): HF-welded seams are inspected in-line so a leak path never reaches a finished bag.
3. Load and zipper tests: a 1,500-plus-cycle load test on the handle and a 3,000-cycle zipper test confirm the bag survives a delivery schedule.
4. Color fastness & color difference: printed logos and fleet colors are tested so branding does not fade or shift batch to batch.
5. Full water-immersion test: sealed builds are immersion-tested to confirm leak control.
6. OQC (outgoing): an AQL sampling pass and gold-sample comparison clear each order before it leaves Dongguan or Ho Chi Minh City.

Choosing the Right Delivery Tote

Matching a tote to a delivery operation comes down to what gets carried and how far. Three quick reads settle it.

Read the Order Type

Mixed hot-and-cold orders suit the standard insulated soft cooler tote. Flat items — pizza, trays, bento — carry level in the SL-C529, while soup-and-sauce menus want the welded leakproof box.

Read the Drop Volume

Single-order couriers are well served by the standard tote; catering or multi-drop runs need the 30-can Insulated Tote Cooler Bag to clear several stops per trip.

Read the Branding Need

For a platform or restaurant fleet, the flat TPU panel takes a printed logo and a fleet color, turning every delivery into a moving brand impression.

OEM & ODM for Delivery Fleets

For platforms, restaurant groups and fleet operators, a delivery tote is bought in volume and worn in public, so branding and build both have to be right. Sealock runs these as private-label programs, and goes beyond color-and-logo work: it offers full ground-up custom development — a buyer can bring a sketch, a sample or a target spec, and the China base handles sample development through to a finished, original bag built around a fleet's order profile.

What a fleet buyer controls

• Branding: fleet color matching and printed logo on a flat, photogenic panel.
• Full custom development: beyond editing a stock model, develop an original bag from a sketch, sample or spec — structure, depth, dividers, pockets and carry built to order.
• Closure and carry: zip tote, welded leakproof, added strap, or a backpack version on the same insulated body.
• Origin: produce in China or Vietnam on the same spec to manage tariffs and rollout lead times.

The terms

• MOQ 300 pcs per design, negotiable on custom builds.
• Sampling 7–15 days; production 30–45 days, FOB Guangdong.
• Ground-up development takes longer than editing a stock model — confirm the development and sampling schedule against a rollout date.
• Welded or sewn across three HF-welding factories, with capacity for a fleet-scale order.

FAQ: Insulated Soft Cooler Tote Bag for Food Delivery

Q: Does an insulated soft cooler tote bag keep food hot as well as cold for delivery?

A: Yes. The insulated soft cooler tote bag works both ways — the EPE foam wall slows heat loss from a hot order and heat gain into a cold one, so a mixed delivery arrives at the right temperature across a typical 20–30 minute run.

Q: Is the delivery tote's lining food-safe and easy to clean?

A: The lining is food-grade PEVA or TPU, safe against food packaging and easy to wipe or rinse between orders. That hygiene step is what lets a delivery bag run dozens of trips a day without holding odor or residue.

Q: Is the insulated soft cooler tote bag leakproof for soups and sauces?

A: The HF-welded body and sealed zipper contain a tipped soup or sauce so it does not soak the next order, and immersion-tested sealed builds confirm it. For soup-heavy menus, the welded Leakproof Lunch Box Cooler is the dedicated choice.

Q: Can the delivery tote be branded for a platform or restaurant fleet?

A: Yes. The flat TPU panel takes fleet-color matching and a printed logo, and color fastness and color difference testing keep the branding consistent batch to batch. MOQ is 300 pcs per design.

Q: Can Sealock build a custom delivery bag from our own design?

A: Yes. Beyond editing a stock model, Sealock offers full ground-up development from a sketch, sample or spec, building structure, dividers and carry to a fleet's profile. Ground-up designs take longer than stock edits, so confirm the schedule against a rollout date.