It allows you the opportunity to weigh and measure your bags before you arrive at airport. This is a quick and simple way to avoid over-weight bags and check in issues. The handy scale weighs bags up to 5 pounds, and helps you comply with the airlines requirements for luggage weight. The digital readout locks so you can easily read your bags weight. It also has a comfortable, easy-to-grip handle. It retails at Brookstone for $29.95.