Valembal thermal pouches prevent thermal shock during transportation of thermosensitive products, such as vaccines, eye drops and specific treatments, from the delivery location (pharmacy, hospital, laboratory, etc.) to the place of use. The inclusion of a gel pack pre-cooled to between +2°c and +8°c enhances the performance of the pouch. An inner separator film prevents direct contact between the product and the gel, thus avoiding any thermal shock. A customized pouch is an excellent medium for advertising or explaining the importance of respecting the cold chain.