Wear comfortable clothing that you are not concerned about getting dirty.  You need to wear long pants and closed-toe shoes.  You will be participating in some limited physical activities and some of the activities will take place outdoors.  Be aware of the weather, and dress accordingly. Once you are given your backpack and supplies, you are expected to wear the gear given (knee pads, safety vest, etc.).  This includes wearing safety goggles/glasses.  Regular glasses or sunglasses are not an adequate substitute for the safety goggles/glasses.