Sealock manufactures the large capacity cooler backpack for group camping that wholesale buyers and outdoor brands source for basecamp and expedition ranges. Feeding a group in the field is a logistics problem: several people's food and drink for a day or two has to be hauled from a trailhead or a car park to a pitch, kept cold once it gets there, and survive being loaded, dropped and repacked by more than one pair of hands. A day-sized cooler cannot do it. The 22L welded, 48-hour pack below is built to carry a group's cold load on one back and hold it at camp.

Why Group Camping Breaks Small Coolers

Scaling a cooler up for a group is not just a bigger box — the failure points change. Below are the specific, real mechanisms that punish an undersized or under-built cooler on a group trip, each one a reason the pack is engineered the way it is:

• Overloading past the seam rating: a group crams a cooler to its limit and beyond, and the extra kilos of food, drink and ice concentrate on the base seams and strap anchors that a half-full day-pack never stresses.
• Long carry from car to pitch: group sites are often a walk from parking, so a heavy cooler rides a back far longer than a tailgate cooler ever does, punishing thin straps and a bad load path.
• Multi-day ice demand: a weekend in the field runs far past a day-cooler's wall; without enough insulation the ice is gone by the first evening and the group's food is at risk overnight.
• Repeated open-close by a whole group: everyone raids the cooler independently, so the zipper and lid cycle several times more per hour than a single-user bag, and every open dumps cold air.
• Ground abrasion and grit at camp: a cooler set on rock, gravel and dirt dozens of times, dragged between tents and packed in a car boot, grinds at the base and corners.
• Melt-water pooling with a big ice load: a large ice charge makes a lot of melt-water; a seamed or leaky base weeps it into a tent floor or a car boot over a long trip.
• Shared rough handling: a group cooler is thrown, stacked, sat on and used as a seat or a table, taking impact and crushing loads a carefully carried personal cooler avoids.
• Warm-ambient soak at an exposed site: a cooler sitting in sun at an open pitch all afternoon fights a high ambient load for hours, stressing seams and accelerating melt.
• Food-safety risk across a weekend: raw meat, dairy and leftovers shared by a group over two days make a hygiene failure serious, so the liner has to stay genuinely food-safe and cleanable in the field.
• Odor and residue with no sink: a group's mixed food over multiple days leaves residue in a bag that will not see a proper wash until the trip ends, so an absorbent or seamed interior turns sour.

A large capacity cooler backpack that has not been engineered against this list is just a big bag that fails slower.

The Maker: Sealock

A group cooler that fails at camp strands a whole trip's food, not one person's lunch, so the build has to hold. Sealock is the cooler brand of YiFuLong Outdoor Gear Co., Ltd., welding insulated soft bags since 2003 across three high-frequency welding factories.

The Build That Carries a Group's Load

The failure list above resolves to three demands: hold the volume, hold the cold across days, and survive shared abuse. The lead pack answers all three.

Volume and a 48-Hour Wall

At 22L, the lead backpack carries a genuine group load rather than a personal lunch, and a 50 mm high-density XPE foam wall — roughly double a day-cooler's insulation — holds ice for 48-plus hours, enough to bridge a two-day trip on one charge instead of leaving the group foodless by the first night.

A Harness and Base for the Haul

Carrying a full 22L from car to pitch is where thin straps give out. The pack runs padded shoulder straps with a sternum strap and a waist belt, so the weight sits on the hips over a long carry rather than dragging on the shoulders, and a reinforced TPU base takes the grit and drops of a shared camp. Sealock validates the load path with a 1,500-plus-cycle load test on straps and anchors and a 3,000-cycle test on the airtight zipper that a whole group will open all weekend.

An Airtight, Food-Safe, Cleanable Interior

The IPX7 airtight welded body keeps a big ice charge's melt-water off a tent floor, and the food-grade TPU membrane liner stays safe against a weekend of shared raw meat, dairy and leftovers and wipes clean in the field without a sink. That is what keeps a group cooler hygienic across two days, not just cold.

The 22L Large Capacity Cooler Backpack: Specifications

Confirmed parameters for the lead model, the 22L IPX7 Waterproof Insulated Cooler Backpack (SL-I280):

Scaling the Camp Kitchen

One backpack carries the load in; more capacity holds the camp. These sister models, all real and all IPX7 airtight, extend the cold store at basecamp:

Image	Model	Camp Role	Key Spec	Link
	22L IPX7 Cooler Backpack (SL-I280)	The load-carrier, car to pitch	50 mm XPE, 48+ hrs, sternum + waist belt	View
	24L Leakproof Soft Cooler (SL-I094)	The basecamp cold store, lightest large build	24L, IPX7, 48+ hrs, 1.95 kg, UTX buckles	View
	24L Soft Cooler Tote (SL-I230)	Grab-and-go drinks tote at the site	24L, IPX7, up to 48 hrs, front zip pocket	View
	Waterproof Soft Cooler 12/15/20L (SL-I032)	The lighter personal or side cooler	12–20L, IPX7, 48+ hrs, detachable strap	View

Sizing the Cold Store to the Group

The right combination depends on group size, trip length and how far the carry is. Three quick reads settle it.

Read the Group Size

For two to four campers, the 22L SL-I280 alone covers a weekend. For a larger party, pair it with the 24L SL-I094 as a stationary basecamp store while the backpack does the runs.

Read the Carry

If the pitch is a real walk from the car, the harness matters most, and the SL-I280's sternum-and-waist system carries the load best. For a short carry, the totes and the SL-I032 add capacity without more backpacks.

Read the Trip Length

Every model here holds ice 48-plus hours, so a two-day trip runs on one ice charge. For longer, plan an ice resupply or add a second stationary cooler rather than over-packing one bag past its seams.

Quality Control for Group-Load Coolers

A group cooler is loaded heavy, opened constantly and shared roughly, so the checks target overload, leaks and repetition:

1. IQC (incoming): TPU fabrics, food-grade TPU membrane and XPE/EPE foam are verified for thickness and food-contact safety before cutting.
2. IPQC (in-process): base seams, strap anchors and every 27.12 MHz weld line are inspected in-line, since these carry an overloaded group cooler.
3. Strap load test: a 1,500-plus-cycle load test on straps and anchors simulates a full 22L carried far, repeatedly.
4. Full water-immersion test: sealed builds are submerged to prove the IPX7 body holds a big ice charge's melt-water.
5. Zipper cycling: a 3,000-cycle test on the airtight zipper matches a whole group opening the bag all weekend.
6. OQC (outgoing): AQL sampling and a gold-sample comparison clear each order before it leaves Dongguan or Ho Chi Minh City.

OEM & ODM for Camping and Outdoor Brands

Camping brands sell a system, not a single bag, so a group-cooler program often spans a backpack plus stationary coolers in one look. Sealock builds these as private-label programs and, beyond a logo and color swap, develops a pack from the ground up — a brand brings a sketch, a sample or a target spec, and the China base carries it through sampling to a finished, original build. Ground-up development takes longer than a stock edit, so plan against a season launch.

What a camping brand controls

• Capacity range: a matched family from a 12L personal cooler to a 22L carry pack and 24L basecamp stores.
• Insulation tier: from the standard XPE/EPE wall up to PU, VIP vacuum-panel, EPP or aerogel builds for a premium long-hold line.
• Harness spec: reinforced anchors, a heavier waist belt or a frame for the biggest group loads.
• Branding: the six-color base palette or full custom color plus a printed logo, color-tested for consistency.
• Origin: produce in China or Vietnam on the same spec to manage tariffs and lead times.

Working terms

• MOQ 300 pcs per design, negotiable on custom.
• Sampling 7–15 days; production 30–45 days, FOB Guangdong.
• Welded or sewn across three HF-welding factories.

FAQ: Large Capacity Cooler Backpack for Group Camping

Q: How big a group does a 22L cooler backpack cover?

A: The 22L SL-I280 carries a weekend of food and drink for roughly two to four campers on one back. For a larger party, pairing it with a 24L basecamp cooler like the SL-I094 keeps everyone supplied without overloading a single bag past its seams.

Q: How long does the large capacity cooler backpack keep ice on a camping trip?

A: The 50 mm high-density XPE foam wall holds ice for 48-plus hours, which bridges a two-day group trip on one ice charge. Keeping the airtight zipper closed between raids and adding ice packs extends that at a hot, exposed site.

Q: Is a large cooler backpack comfortable to carry fully loaded to a campsite?

A: Yes. Padded straps with a sternum strap and waist belt move a full 22L load onto the hips for a long carry from car to pitch, and the straps and anchors pass a 1,500-plus-cycle load test so a heavy group load does not tear them.

Q: Will a big ice load leak out of the cooler backpack at camp?

A: No. The IPX7 high-frequency welded body and airtight zipper keep a large ice charge's melt-water sealed inside rather than pooling on a tent floor, and sealed builds pass a full water-immersion test.

Q: What is the MOQ and lead time for a custom group camping cooler backpack?

A: The standard MOQ is 300 pcs per design, with samples in 7–15 days and production in 30–45 days, FOB Guangdong. Capacity range, insulation tier, harness, colors and China-or-Vietnam origin are set during customization, and ground-up designs take longer.