Found another solution; a portable solar-powered hot shower for camping and other outdoor adventures.
COOAK Summer Shower Bag, Camping Shower Bag 5 Gallons/20L Outdoor Solar Shower Bag Removable Hose and On-Off Switchable Shower Head Portable Solar Shower Bag for Beach Traveling Hiking Swimming
Amazon.com : COOAK Summer Shower Bag, Camping Shower Bag 5 Gallons/20L Outdoor Solar Shower Bag Removable Hose and On-Off Switchable Shower Head Portable Solar Shower Bag for Beach Traveling Hiking Swimming : Sports & Outdoors
These heated vests are another excellent option for cold weather.
Here’s one from Amazon. You can attach it to any coat or jacket.
Found another solution; a portable solar-powered hot shower for camping and other outdoor adventures.
I have one of these. Highly recommended.