When trying on boots, wear two layers of socks, one of them thick, just as you would on the trail. Pretend you're climbing and imagine how your foot will feel after miles of the same movement. Ask if the boots you're buying are waterproof. If not, consider treating them with a sealant. Although thick, bulky wool socks may seem like a strange piece of equipment for summer hiking, they do an excellent job wicking sweat away from your feet, keeping them cool in the heat and warm in the cold.
White socks work the best, as it's easier to spot ticks against the light fabric.
For the face To avoid squinting and sunburns, wear UV-rated sunglasses, a hat with a brim and waterproof sunblock. Sunblock that isn't waterproof will wash off if you start to sweat. Make sure hiking shorts or pants are roomy enough to take big steps and tough enough not to tear when you sit down on a granite outcropping. Always wear layers when hiking. Wool or fleece shirts and sweaters make great outside protection because they breathe well and will stay warm when wet.