"Legroom seats" refers to seats in vehicles or airplanes that have extra space between the seat and the row in front of it, allowing more room for the person's legs to stretch out comfortably. Full definition
I don't mind just paying for the occasional extra legroom seat, or just dealing with standard economy. (pointsmilesandmore.com)
Some people simply refer to these seats as «extra legroom seating». (rewardexpert.com)
So of course, we dug into it and here's what a Virgin spokesperson told TravelSkills: «That's correct, Delta Diamond and Platinum Medallions are entitled to assign an Exit or Extra Legroom seat free of charge from day of booking, for themselves only. (travelskills.com)