How to choose right size cover for the luggage ?1 inch=2.54 cm 1cm=0.39inch you need to measure height ( not including wheel ) , width and thickness of your luggage first . if the sum of thickness , width and height is between 96 cm - 112 cm , please choose S size . if the sum of thickness , width and height is between 114 cm - 134 cm , please choose M size . if the sum of thickness , width and height is between 136 cm - 151 cm , please choose L size . if the sum of thickness , width and height is between 153 cm - 168 cm , please choose XL size .How to customize the image on the cover ?Step 1:You can send us the image through message or send it to our email . Step2:we will show you the preview of the cover with your picture soon after we receive your image. Step3: if you are satisfied with the preview ,you can make an order.