20L/40L Solar Camping Shower | Portable Gravity-Fed Shower Bag

Choose Your Size: 20L or 40L Solar Shower

The Solar-Thermal Field Reservoir is a gravity-fed solar camping shower available in two sizes: 20L (5.3 gallons) for solo or couple use, and 40L (10.6 gallons) for groups or extended showers. The heat-absorbent PVC absorbs sunlight to heat water to a comfortable 30°C (86°F) in just 3 hours, giving you a warm shower anywhere without fuel, electricity, or batteries.

Both models feature an on/off thumb valve on the showerhead so you can pause water flow while soaping up to conserve water. The 20L provides 8-9 minutes of continuous flow, while the 40L extends your shower to 10+ minutes. Weighing as little as 330g (20L) or 470g (40L), these ultralight shower bags collapse flat when empty and come with a reinforced handle and hanging cord to support the full weight when hung from a tree or vehicle rack.

Key Features

• Two Size Options: Choose 20L for solo/couple use or 40L for groups and longer showers.
• Fast Solar Heating: Heats water to 30°C (86°F) in 3 hours of direct sunlight without fuel or electricity.
• Water-Saving Valve: Thumb-controlled on/off valve lets you pause flow while soaping to conserve water.
• Ultralight: Weighs only 330-470g and collapses flat for easy packing.
• Reinforced Suspension: Strong handle and hanging cord support the full weight when hung overhead.

Specifications

• Capacity: 20L (5.3 gal) or 40L (10.6 gal)
• Material: Heat-absorbent PVC
• Weight: 330g (20L) / 470g (40L)
• Heating Time: 3 hours to 30°C (86°F)
• Flow Duration: 8-9 min (20L) / 10+ min (40L)
• Includes: Shower bag, flexible hose, valve-controlled shower head, hanging cord
• Best For: Camping, backpacking, hiking, beach trips, mountaineering