You don’t need to carry all your stuff which is not required for trekking. You can be left at your hotel or Himalayan Smile Treks office in Kathmandu. Nearly all hotels have a luggage deposit but we do not store clients valuables in our office. Also the hotel you will provide locker their you can store your valuables things. After you come back from trekking, we handover your luggage and other stuff to you.