You only carry a day-pack with everything you may need for a day´s hike (water bottle, rain gear, cameras,
snacks). Horses carry the rest of your  extra bag and will meet you upon arrival at the next stop. You will be allowed to put up to 8 Kilos / 17 pounds may include a sleeping bag 1.5 Kilos / 3.3 pounds, sleeping pad kilo /2 pounds, extra clothes for the night such as long warm underwear, warm fleece, and others.