Portable waterproof bag that is used to wash clothing

I want to make a similar product to the Scrubba that is sold on amazon. This is a portable bag that you can wash your clothes in. You can visit the Scrubba website for a better idea about the project. The main website address is www.thescrubba.com. If you cannot access the website, this is what I am looking for: 1. A waterproof bag that is light. Think of a cloth bag with a polymer lining. 2. In the bag, there is a rubber lining that has a few grooves that will help in cleaning the clothing. 3. On the bag I am looking for a clear plastic strip that gives the user an idea about the amount of water that is in the bag. If you are able to access the Scrubba website you will see what I am talking about. 4. The clothes are put in the bag, and it needs to be sealed where the water does not leak out. The Scrubba uses a rubber nozzle to let the air out. This is a critical mistake because people are complaining that the water leaks from there. I want to see if there is a better way to let the air out. 5. The other weakness in the Scrubba is the material quality. I want to see what we can do to make a better quality product. The goal of this bid is to get an idea on how much it will cost to make something similar to Scrubba and how much it will cost to produce if orders are in the 1,000 - 5,000 unit range.