Hulongo Leakproof Insulated Cooler Backpack 30L (Black) — 12hr Cold Retention, Lightweight

The Hulongo Leakproof Insulated Cooler Backpack is a 30L, fully sealed soft cooler that keeps food and drinks cold for up to 12 hours while remaining lightweight and easy to carry.

Whether you’re heading to the beach, a hike, a picnic, or a day of errands, this cooler backpack combines rugged outer fabric, thick insulation, and a leakproof interior to protect your gear and preserve temperature. Designed for everyday adventures, it balances thermal performance, organized storage, and user-friendly features like padded straps, side pockets, and an integrated bottle opener.

How long will the Hulongo backpack keep my items cold?

The insulated core—featuring 8mm foam and a silver PEVA lining—slows heat transfer so chilled items stay cool for many hours. Under typical outdoor conditions you can expect up to 12 hours of temperature retention, depending on initial ice/gel packs and ambient heat.

• 8mm closed-cell foam insulation for sustained cooling.
• Reflective silver PEVA liner reduces radiant heat gain.
• Horizontal waterproof zippers and seamless hot-pressing minimize leaks.
• Best results when pre-chilled and used with ice packs or frozen bottles.

What capacity and organization does this backpack offer?

This 30L cooler holds up to about 35 standard 330ml cans or a combination of meals, bottles, and snacks while keeping items separated and accessible. Two insulated compartments plus external pockets make it simple to sort food from drinks and keep essentials handy.

• Main insulated compartment sized to fit tall bottles and meal containers.
• Secondary insulated pocket for additional drinks or chilled foods.
• Front zip pocket for utensils, keys, or wallet and two side pockets for quick-grab items.
• Built-in bottle opener secured to the exterior for convenience.

Is the backpack durable and easy to maintain?

The exterior uses high-density nylon with a PU coating to resist scratches and moisture, and the interior PEVA surface wipes clean quickly after use. Lightweight construction and padded adjustable straps make it comfortable for long walks without sacrificing durability.

• Scratch-resistant nylon with protective PU finish for longevity.
• Waterproof interior liner wipes clean; hot-pressed seams prevent seepage.
• Padded, adjustable straps reduce shoulder fatigue on longer outings.
• Lightweight design replaces heavier rigid coolers for easier transport.

How leakproof is the Hulongo cooler backpack?

The bag is built with a seamless hot pressing technique and smooth horizontal zippers to keep liquids contained and prevent drips through seams. Hulongo supports this design with a replacement or return option should any unexpected leakage occur.

• Seamless hot-press construction minimizes stitching gaps.
• Horizontal water-resistant zippers reduce points of entry for leaks.
• PEVA inner liner is impermeable and simple to sanitize.
• Company replacement/return policy included for added assurance.

Who is this for? Outdoor enthusiasts, busy families, commuters, and anyone who wants a portable, reliable soft cooler will find this Hulongo backpack useful. It’s ideal for day trips, tailgates, beach days, and errands when you need organized storage, comfortable carrying, and dependable temperature control without the bulk of a hard cooler.