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White rectangular instant cold pack labelled First Aid Only 21004

First Aid Only

First Aid Only 21004 Instant Cold Pack 4" x 5

SKU CH-44QN-5F848 MPN 21004

Single-use cold pack measuring 4" x 5" provides immediate cooling for first-aid treatment

  • Product typeOthers
  • Instant cold therapy reduces swelling fast
  • Single-use design activates without refrigeration
  • Compact 4" x 5" size fits first-aid kits
  • Disposable pack simplifies emergency response
  • Ready to use straight from the box

Instant Cold Pack for First Aid

The First Aid Only 21004 is a single-use instant cold pack measuring four by five inches. It is intended for anyone needing immediate cold therapy for minor injuries such as sprains, strains or bruises. No refrigeration is required before use, so it can be kept in a kit until needed.

Single-use design fits any kit

Activation is achieved by squeezing the pack, which starts an endothermic reaction that provides cold within seconds. Because it requires no power, freezer or ice, it frees up storage space in vehicles, sports bags or workplace cabinets. The compact size allows it to sit alongside bandages and antiseptic wipes without adding bulk.

Ready to use with no extras

The pack is supplied individually and contains the water and ammonium nitrate compartments needed for the reaction. No separate chemicals, wrappers or instructions are included beyond the printed label on the pack itself. Once activated it cannot be reused, so each unit covers one treatment episode.

How it compares

Measured against everything we stock in First Aid Kits & Wound Care, at today’s prices. Recalculated every night.

Price $50.99
Pricier than about 79% of the 692 comparable items (median $17.99).

Specifications

Product
Brand nameFirst Aid Only
Product typeOthers
Size & build
Shipping weight1.36 kg
Package size254 × 254 × 76 mm

Questions about this item

What limits how long the 4" x 5" cold pack stays cold under sustained use?

The pack is a single-use instant cold pack; once the internal chemicals react it cannot be re-cooled, so its duration is limited to one activation cycle.

Does the 21004 cold pack generate any noise, heat or power draw while it is running all day?

No, the pack contains no electronics or moving parts; it produces cold through a chemical reaction and creates no noise, heat output or power consumption.

What other items must I already own for the 21004 cold pack to work?

Nothing else is required; the pack is self-contained and activates by squeezing or striking it to mix the internal components.

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