The boots come in my opinion even 3 sizes smaller. For feet with Gr. 33 we would Gr. 36 required. In Gr. 35 pushed the foot inside the shoe is already almost at the front of the seam. However, they were too bulky and weighty already in scarce size that we will not try the next size up. The boots are more likely to go. Quite wide feet with high instep Our son shuffled it around as to large rubber boots. Otherwise, at least the green looks fresh and cheerful, and the shoes are well made.