Adjective
twin-size (not comparable)
Being the size of a twin bed.
I started it for my best friend, got halfway finished—it’ll fit a twin-size bed—and decided I didn’t like the patterns of the colors. Source: Internet
Turn your home office or main living space into a guest room with this twin-size futon sleeper sofa available in five stylish colors: Pink, mustard, blue, green and gray. Source: Internet