Is the MBS 20-Inch Folding Bike good for commuting?

Yes, for mixed rides. The 20-inch wheels and 8-speed gearing suit paved commuting better than a small-wheel single-speed folder. It folds for trains, buses and car trunks, though it is bulkier folded than a 16-inch bike.

How does it compare with a 16-inch folding bike?

The 20-inch wheels roll over cracks and curbs more smoothly and hold speed better. The trade-off is a larger folded package that is harder to carry on crowded transit.

What gearing does it have?

It uses a Shimano Acera 8-speed shifter and derailleur, so you get a usable range for hills and headwinds. That is more versatile than the single-speed setups common on budget folders.

What is the frame made of?

The main frame is aluminum, which keeps weight down. The fork is high-carbon steel, which is durable but heavier than an aluminum fork.

Does it come with fenders or a rack?

The listed build covers the frame, fork and drivetrain. Fenders, a rack and lights are not part of it, so plan on adding them for all-weather commuting.