Why Indian Railways AC Coaches Have That Extra Flap On Your Seat
Why Indian Railways AC Coaches Have That Extra Flap On Your Seat
The stitched rexine layer on AC berths is a built-in bed sheet holder designed to improve comfort during overnight journeys.
If you have travelled in an air-conditioned coach on Indian Railways, you may have noticed a loose rexine flap stitched midway onto the berth. It looks like an extra layer of material, partially attached and slightly lifted from the main seat surface. Many passengers spot it but rarely know what it is for.
Recently, the curiosity around this feature resurfaced after a passenger shared a photo on Reddit’s r/indianrailways forum, asking why the flap existed. The image showed the extra layer lifted, revealing a small gap between the seat fabric and the stitched rexine. The post quickly drew attention, with many users admitting they had noticed the flap before but never understood its purpose.
The answer is simple — it is designed to hold the bed sheet in place.
In AC coaches such as 2AC and 3AC, passengers on overnight journeys are provided bedding, typically including two bed sheets and a blanket. One sheet is meant to be spread over the berth before sleeping. However, train movement and constant shifting during sleep can cause the sheet to bunch up or slide off.
The extra rexine flap creates a narrow pocket along the berth. Passengers can tuck the corners or edges of the bed sheet into this gap, securing it firmly. This prevents the sheet from slipping when a traveller turns or adjusts position during the night.
Without this feature, many passengers experience loose bedding that folds or gathers under them, leading to discomfort. The flap helps maintain a smooth and stable sleeping surface throughout the journey.
Though it may seem like a minor design detail, the flap plays an important functional role. AC coaches are built for longer routes where seats are converted into sleeping berths. Since trains are constantly in motion, even small movements can disturb loosely placed sheets. The built-in holder ensures bedding stays neatly in place.
Social media reactions showed how unnoticed this feature had been. Some users said they always struggled with sliding sheets and never realised the flap was meant to solve that problem. Others joked that they now finally understood why some passengers’ bedding stayed perfectly tucked in while theirs never did.
The extra layer is neither decorative nor accidental. It is a practical addition meant to improve sleep comfort on overnight train journeys.
So the next time you travel in an AC compartment, try tucking your bed sheet into that flap, you may find your night’s sleep much smoother.
