Poros is a gorgeous picturesque island, with traditional insular houses and beautiful mansions. Visitors should not miss to walk around the streets of Poros Town. So, it would be wise to bring flat/athletic shoes with them.
In addition, visitors should be aware that the temperature in Poros is slightly lower than in other islands and usually is below 30°Ceven in the summer. So, a light jacket is always useful. However, the sun is strong and hats, sun blocks and umbrellas are required.
Finally, Poros is so close to Athens, the Peloponnese and other islands of the Saronic Gulf that it can be combined with a vacation in one of the aforementioned places. It is very easily accessible and it is a highly recommended destination for international travelers visiting Athens.