Warm Pack 40 – 40 Hour Heat Pack
Reliable long-lasting heat for transporting live aquatic animals during colder weather.
Warm Pack 40 is an air-activated heat pack designed for shipping temperature-sensitive livestock, helping maintain warmth inside an insulated shipping box for up to 40 hours. Ideal for fish, shrimp, snails and other aquatic livestock where additional protection from low temperatures is required.
Simply remove the heat pack from its outer packaging, expose it to air and allow approximately 5 minutes for activation before placing it securely inside the insulated shipping box.
Key features
- Up to 40 hours of heat
- Air activated – no shaking required
- Designed for transporting live animals and plants
- Average stated temperature: 50°C / 122°F
- Maximum stated temperature: 65°C / 149°F
- Non-toxic iron-based formulation
- Individually sealed for storage
Important: Heat packs can become very hot and must never be placed directly against livestock bags. Always use suitable insulation and allow adequate airflow inside the shipping box.
A practical addition to winter livestock shipping for extra peace of mind during transit.



