This three-bedroom home fits into a Mercedes-Benz Sprinter van. It was created by Jack Richens to be the perfect mobile home. He built it for only $18,500. Photos by Tim Hall Photography

If you’ve taken a flight in coach anytime in the last 20 years, you may have noticed the seat in front of you creeping closer and closer to your knees. No, you’re not growing.

Yes, the airlines have been squishing seats closer together. It’s called the pitch, and it’s been chopped down by two to three inches over the years.

That’s not the only place where the big three are sneaking space from you. Here’s a helpful representation of just how much room your ticket gets you on your next flight. The following is a transcript of the video.

How airline seats have shrunk over the years. Feeling cramped? You’re not alone. Airlines are adding more seats, leaving less room for individual passengers. The pitch, or distance between seats, has shrunk. The minimum pitch has gone from 31″/32″ to 30″.

It’s not just the pitch. Seat width has also been narrowed over the years. Each airline has lost about 2 inches in seat width. These aren’t even the smallest. Some airlines fill the Airbus A330 with 16.7″ seats. For comparison, the average first class seat is 21″ wide.

One small study compared sleep quality in 17″ vs. 18″ wide seats. 2/3 of passengers who slept in the 18″ seats reported better quality sleep. Plus, passengers fell asleep faster and had fewer twitches in the 18″ seats. So if you plan on catching some Zzz’s on your flight, dish out the cash for a seat upgrade.

Airbus recently filed a patent for a sleeping box system for its A350 and A380 aircrafts. The 31″ x 31″ beds would feature all the amenities of an airplane seat, but in a reclining bed. However, if you get cramped, a standard airplane seat isn’t included in the ticket price. Produced by Rob Ludacer

Have you ever looked out of an airplane window and wished you could see more of the world from 7 miles above it? A new technology stands to put the best seat in the ceiling of the airplane. The Skydeck is a new design by Windspeed Technologies that places a teardrop shaped translucent dome in the roof of an aircraft. Twin seating in the dome lets passengers rotate 360˚ to see the sky from all angles.

The days of waiting in a crammed airline aisle while some guy struggles to pull his bag from the overhead could soon be over. Molon Labe Seating has released their design for Side-slip seats, airline seats that compact and slide over each-other to add more room to the aisle during boarding and exiting. By just replacing the seats, airlines could turnaround planes faster, which could make travel time more efficient and airline tickets less expensive.