I wear a slouch whenever it rains to keep the rain from running down my neck and during the summer months I wear a slouch whenever outside doing yard work and such to give a little shade . I wet the interior to keep cool . I use a wool covered federal canteen at work doing construction or when out taking a ride on my quad . When on the quad I also bring along a haversack with my canteen filled with snacks and other necessities . I wet the cover on the canteen every so often to evaporate any heat and to keep the water cool .