Eco-friendly coffin, consisting of a box (1) formed by two halves (1 a), identical and symmetrical in their longitudinal axis (2), joined together, made of biodegradable, compostable, water-soluble and non-toxic material, consisting of Polyvinyl alcohol (PVOH), additives and fillers and obtained via injection into a mold. The box (1) has a fill hole with cap (5). The joint (3) between the halves Is sealed by incorporating a water-based mixture and PVOH material, additives and fillers. The fill hole is determined by recesses (4) arranged along the edge of the two halves (1 a) and the cap (5)； it is sealed by the same water-based mixture and PVOH material, additives and fillers along the joint. Cross-wise and longitudinal reinforcements (6) are located on each half (1a) and in thin areas (7).
