ECOSTYLE is an Erasmus + Cooperation Partnership in Higher Education that took place in 2023-2024. Five institutions participated: John Paul II University in Biala Podlaska (Poland), Universidad Complutense de Madrid (Spain), Palacky University in Olomouc (Czech Republic), Suor Orsola Banincasa University in Naples (Italy) and Universidad de Sevilla (Spain). It aims to stimulate Outdoor Education and to shape students’ green skills to promote sustainable development. Is has three phases. During the first, higher education students’ educational needs were analysed, and a joint subject programme was developed. The second phase was devoted to fostering innovative learning and teaching in outdoor education. Also, mobility and results dissemination at international conferences were included. The last phase concerned dissemination: didactic films; e-book, and teaching materials on the project website. The project's main result is an e-book that includes curriculum development, textbooks, and didactic materials based on experience exchange. Students and lecturers will be able to transfer the developed innovative methods of learning and teaching, responding to social needs, partner organizations, and other institutions, encouraging them to engage in various pro-ecological activities following the goals of sustainable development, including the community and promoting them outside.