The 5‑gallon bag heats water to about 105 °F (40 °C) in around 3 hours of direct sunlight.






Frequently Asked Questions
How long does it take to heat water and to what temperature?
How long does it take to heat water and to what temperature?
Is there a built‑in thermometer and how accurate is it?
Is there a built‑in thermometer and how accurate is it?
Yes—it includes a °F/°C temperature gauge, accurate within ~5%, so you can safely monitor water temperature.
What materials and design features ensure durability and portability?
What materials and design features ensure durability and portability?
Made from durable, leak‑proof PVC, with welded seams, a sturdy hanging strap, on-off valve, and flexible shower hose. Folds flat and weighs approximately 450 g.
How do I use it outdoors and what are its size specs?
How do I use it outdoors and what are its size specs?
Simply fill with water (up to 5 gal/20 L), lay it black‑side up in the sun for ~3h, then hang from a branch/carabiner. Bag size: ~50 × 45 cm; hose length: ~28″.