I took this product travelling with me - I was travelling for a month, so this seemed like the perfect answer: very light and takes up very little space.
However, unfortunately it didn't work very well. I needed many more sheets that the instructions suggest just to create some bubbles in the sink, then once one item of clothing had been washed all the bubbles had gone, and I felt like I needed to add more soap. Plus, the soap, once dissolved, never lathered so I didn't feel like I had washed the clothing very well. I would not and have not recommended this to fellow travellers, instead just use soap or shower gel - something you will already be carrying and works just as well.