G'day B,

Generally, you'll need 3-4 hours of sunlight on a nice warm sunny day to bring the water up to a nice temperature. Another option would be to heat up some water on the stove and mix it 50/50 with room temperature water if you wanted to have multiple showers in a row.

G'day John,

The hose is approximately 50cm long, but you could likely find some similar diameter hose at a hardware store and replace it to make it longer if you wanted to.

G'day Katrina,

No, the Companion Pioneer Portable Solar Shower does not have a built-in thermometer.

G'day Colleen,

You can certainly fill the Solar Shower with warm water on a cold/overcast day.

These are certainly simple showers Jennifer, albeit effective for the price. I'd recommend using a rope thrown over a branch to hoist the shower up higher, or as you mention you could cut the hose to suit your needs, it will still be perfectly functional. Long hair may take a while to rinse I agree, so for anyone with long luscious locks, it may be worth investing in an electric shower with a pump.