These uniquely designed luggage scales are extremely easy to use and hold when weighing any of your luggage, whether it be carry on bags or your families suitcases. Simply attach the included strap to the device and clip the strap around the handle of your bag and lift, it’s that simple. The scale has an auto hold feature . so within seconds you will know the weight of your bag. The scales will weigh up to 40kg accurately and the scales themselves are very lightweight so you can easily take them with you on your travels and weigh your bags before you return home and ultimately this will prevent those nasty excess baggage charges.