三边长总和小于275厘米

一般是28寸行李箱

你只要是正常途径购买的行李箱，肯定没问题

一般24-26箱子都没问题，这个重量的箱子不太可能异到哪里去

图是对的。网站信息如下，看最后一段
​https://www.easyjet.com/en/help/baggage/hold-luggage


Hold luggage
Cabin bags >


Each customer including children and infants can buy up to three hold bags. A standard hold bag is 23kg. You can buy extra weight in 3kgs units, up to a maximum of 32kg per bag.


If you’re travelling with family or friends on the same flight and Booking, you can pool your total weight allowance.


This means that the total weight allowance can be split among the total number of bags booked, as long as no single item weighs more than 32kg. Maximum total size (length + width + height) = under 275cm.