Our sleeping bags are rated to temperatures as low as -10°C but are more suitable for temperatures of about -5°C. Since you wont find temperatures as low as this on the Inca Trail we rate them as very warm and cosy! We charge US$25 per person for the 4 day/3 night trek. We will give you the sleeping bag one day in advance so you can try it out. If there are any problems just let us know when we come to pick you up from your hotel. On the morning of the 4th day of the trek the cook has instructions to collect all the sleeping bags and bring them back to the office. After renting out our standard sleeping bags 15 times we give them to our porters to use. Our sleeping bags are synthetic (easily washed) and weigh 2.5kg. We do not provide down-filled sleeping bags because they cant be washed after each use. There are several equipment rental shops in Cusco is you need to rent down-filled bags.