Excellent for shipping live insects, reptiles, fish, flowers etc.
Designed for reliable and steady heat release for 72 hours.
Provides an average warmer surface temperature of 100 F (38 C).
Simple to use… just open package and expose heat-pack to air to activate.
Preheating before usage is not necessary, however the warmer will warm up after 30 to 45 minutes if kept in an enclosed air space (like wrapped in paper or placed inside a paper bag).
Complete instructions on the back of the package.