Seasonal transport can refer to a variety of methods of transportation that are used during certain times of the year. One such form of seasonal transport is sledding, which is typically done in the winter months when snow is present. The term 'SLED' is a four-letter word, and the plural form of the word is 'sleds, ' which is five letters. Sleds are typically pulled by animals, such as horses or dogs, and are used for recreational purposes or to transport goods.