1. It is gel,clean, nontoxic, flexible. 2. Longer-lasting, high performance thermal 3. Leakproof 4. ... temperatures for drugs, blood,biochemical reagent, drug, blood, vaccine, sea food etc.2. Cold therapy: lower the temperature , inflammation resistant, ... when power off. CHARACTERISTIC:1. It is gel,clean, nontoxic, flexible.2. Longer-lasting, high performance thermal protection for valuable shipments ...