Cooler Shock reusable ice packs 4-pack Mid-Size 10x10 — freezes to 18°F, long-lasting puncture-resistant freezer packs

Cooler Shock 4-Pack Mid-Size 10x10 reusable ice packs freeze to 18°F (-8°C) and deliver long-lasting cold for coolers, lunch boxes, and beach totes.

These reusable freezer packs are built to replace loose ice, keep food and drinks colder longer, and save space inside your cooler. Each mid-size 10" x 10" x 1" pack contains a phase-change formula that holds a targeted 18°F freezing point, so contents stay at safer temperatures longer than ordinary ice. The set includes four packs plus a filling funnel; simply add water, cap, and freeze — the reinforced nylon exterior resists punctures and repeated use.

How long will these packs keep my cooler cold?

Designed with a phase-change material that holds at 18°F (-8°C), Cooler Shock packs extend cooling time beyond regular ice. In a size-matched cooler they can maintain lower temperatures for up to 48 hours depending on external heat, cooler insulation, and how often the cooler is opened.

• Freezing target: 18°F (-8°C) for colder baseline temperatures.
• Typical duration: up to 48 hours in a properly fitted cooler.
• Performance factors: cooler size, ambient temperature, and frequency of opening.

Will these replace loose ice and save space?

Yes — each 10" x 10" x 1" pack displaces the volume of several pounds of loose ice, freeing up interior room for food and beverages. Because they lie flat, the packs allow for stacked or layered packing and reduce meltwater mess compared with bagged ice.

• Ice replacement: each pack swaps for roughly 5–6 lbs of melted ice.
• Space efficiency: flat profile maximizes usable cooler volume.
• Less water cleanup: no continuous melting into the cooler base.

How do I use and maintain the Cooler Shock mid-size packs?

Fill the pack through the included funnel with tap water, securely tighten the cap, shake to distribute the gel, and freeze flat for best results. The nylon-reinforced outer shell is puncture-resistant and easy to rinse; store packs dry when not in use to prevent odors.

• Fill once: included funnel simplifies filling and prevents spills.
• Durability: nylon-reinforced construction for repeated cycles.
• Care: rinse, dry, and store flat to prolong life and hygiene.

Are these packs sized for my cooler or beach tote?

The mid-size 10" x 10" x 1" dimensions were chosen for versatile fit in many personal coolers, soft-sided totes, and lunch boxes, but measuring your cooler’s interior before purchase is recommended for best results. The four-pack gives flexible coverage across multiple compartments or concentrated cooling in a single compartment.

• Dimensions: 10" x 10" x 1" per pack; measure cooler interior first.
• Kit: four packs for even coverage or layered cooling strategies.
• Applications: designed for coolers, beach bags, lunch coolers, and portable totes.

Who is this for: Cooler Shock 10x10 mid-size reusable ice packs are ideal for campers, anglers, beachgoers, tailgaters, and families who want longer-lasting cold without hauling loose ice. They suit anyone looking to maximize cooler space, reduce meltwater, and rely on durable refillable packs for weekend trips or everyday lunch packing. If you need a reusable, heavy-duty pack that targets colder temperatures and keeps contents colder for longer, this four-pack is built for that use.