The HeatPaxx Universal Transport Warmer is ideal for shipping live animals, snakes, insects, reptiles, corals, fish or plants in the cold season. It outcompetes competitors products such as UniHeat as it’s designed to operate in a low oxygen environment
It is also ideal for protecting technical equipment in freezing conditions, as well as for shipping temperature-sensitive medicines, paints or electronic components. 
The warmer is characterized by a high reliability and a constant heat output, it is used by most UK pet shops to send out expensive coral frags and fish during the UK’s winter months.
Application:
This heat pack is an activated carbon heater and is activated by air contact. Simply remove the heatpack from the packaging, have it activated in a frost-free environment and place it in a suitable transport box. It is designed to be low in oxygen and give up to 40 hours of optimal heat in a vacuum-sealed package. 
Details: 
Size and weight                 13 x 9.5cm – 100 grams
Heating duration (hours)    40+ hours
Temperature (max./avg)     65 ° C / 50 ° C 
Ingredients                         Iron, water, cellulose, activated carbon, vermiculite, salt