Yes, the sleeping bag is most important such as a high-altitude trek. You need four seasonal sleeping bags for the Everest Three Passes Trek. If you have sleeping bags already, please bring them with you as you’re private. Renting will be clean, however, it can’t compare to your private one, as already used by someone. You can rent those in Kathmandu also, it will be NPR 100 (UERO 0.69) to 150 (UERO 1.03) per day for a sleeping bag. We are pleased to help you to organize a sleeping bag for rent.