Three entrepreneurs come together to discover what our customers think of their precious products. They're nervous, but ready to watch the customers unboxing, testing and giving their feedback on what they like, dislike and what they think could be improved for each invention.In today's episode, we meet David, Jo and David, all hoping to get a high score from our customers and become today's winner. David's invention is a drinks tray which he originally designed for use when sailing in rough seas. The Muggi is a new way to carry hot and cold drinks. Made from a lightweight Polypropylene material, it's designed to be light and easy to carry, but also strong and secure. It holds mugs, glasses or cups in four precision moulded slots and is designed for home or outdoor use.Jo's love of beauty products led to her inventing and creating her company, the Beauty Kitchen in which she hopes to inspire people to buy and use natural products. Her Raw Inventions product is a DIY inventor's kit packed full of recipes, ingredients, packages and labels for people to create their own beauty products using ingredients found in their own kitchen cupboards.David's invention is a clinically tested lower back pain relief device which aims to provide relief and increase mobility. David invented the product as a result of trying to help his friend with chronic back pain. He took a mould of his friend's back and the Lumbacurve was formed. The machine is designed to gently stretch the lower back, relax the discs and free up the spinal nerves.At the end of the episode, after viewing each other's reviews with presenter Lucy Alexander, Lucy reveals who has come third, second and first place, and presents the winner with the Customer is Always Right winner's trophy.