It is extremely difficult and annoying to carry a washing machine, dryer or any other big house appliance up and down stairs. The few solutions that exist for this on the market are either clunky, expensive, or uneasy to use. Most of the time a combination of two or more.
A product consisting of lashing straps that is so small, cheap to mass produce and easy to use that companies like IKEA, Mediamarkt, Coolblue, Bol.com or similar stores can add this product to their sold appliances as an extension of their service. Furthermore, it could of course also be sold separately in stores like Action, Blokker, etc.