Abstract: The invention relates to a refillable and freezable isothermal bag which comprises two plastic bags (6) and (7) and thermal insulation (8) made of polyethylene foam introduced between two bags (6) and (7), including plastic handles (9) joined by heat sealing, the two bags (6) and (7) being joined to each other along a heat sealing line (12), wherein an opening is provided that is envisaged for the introduction of a mixture of water and alcohol, the opening having a composite plastic sheet (1) that has a polyethylene face and a polyester face, the polyester face having a closing means that are water-resistant and tamper-proof provided to close the opening.

Abstract: The invention relates to a refillable and freezable isothermal bag which comprises two plastic bags (6) and (7) and thermal insulation (8) made of polyethylene foam introduced between two bags (6) and (7), including plastic handles (9) joined by heat sealing, the two bags (6) and (7) being joined to each other along a heat sealing line (12), wherein an opening is provided that is envisaged for the introduction of a mixture of water and alcohol, the opening having a composite plastic sheet (1) that has a polyethylene face and a polyester face, the polyester face having a closing means that are water-resistant and tamper-proof provided to close the opening.