In the Reign of Giants DLC, the Straw Hat does not require a Science Machine to prototype. It provides a small protection from wetness and overheating and loses Durability when worn. It is also one of the ingredients required to craft a Rain Hat.
The simple combination of using the Straw Hat and the Umbrella is enough to reduce the player's Wetness during most rains, being an easy and accessible way out for the Wetness problem as the Straw Hat has a low cost based solely on Cut Grass.
- The Straw Hat used to cost 30 Science Points to craft and had a value of 10 Science Points when used on a Science Machine in the research days of Don't Starve.
- Before Spoiled Rotten update, the Straw Hat was used to craft the Spiderhat.