Overall I would rate this product as pretty good. I purchased it to go w/ an inflatable kayak. It works well and quickly to blow up the kayak. I only gave it 4 stars because you need to be carefull when blowing up the kayak b/c the pump attachments can pop off if you are not paying attention, and the kayak will deflate. Now that I know it is a possible problem, I always watch out for it, and don't have problems.