Weather in the Altai mountains is extremely contrast. You can enjoy a really hot summer one day, and suddenly experience the snowstorm and low temperatures next day. Having warm, windproof and waterproof clothes is a matter of safety and getting satisfaction of the tour. You should pack into your travel bag some T-shirts, fleece jacket, membrane jacket/windbreaker, trekking boots, comfortable shoes for hiking, warm hat and gloves, fleece trousers, windproof trousers, sport socks, cap or kerchief, sunglasses, swim suite for bath house, rubber slippers.