Product details：
Function:
1. Size 20*13cm; material: PE&NYLON; weight: 250g
2. When using, this product can supply cold environment without outer source
3. non-toxic, non-caustic, reusable
Use manual:
Put it in the freezer for 12 or more hours before using
Application:
1.Transportation: used in long distance refrigerated transport for all kinds of biology freezing reagents, medicine, blood plasma, bacterin, seafood, poultry and fresh food.
2. Daily life and camping: cold reservation and electricity saving
3. Medical treatment: defervesce, diminishing inflammation and easing pains,
hemostasis and physical therapy and skin care.
4. Sports: accident injure, wrench in training and matches