1. aluminum frame with powder coated finishing: well jointing make the frame sturdy, polished legs
2. SGS tested PE wicker/ rattan, UV-resistant & more durable when it comes to comparing with some cheaper wicker, the latter corrosioned easily under water and UV
3. polyester fabric, middle-high denstiy foam, proper softness can give you a nice feeling
4. aluminum or steel is changeable; aluminum is lighter, steel is a little cheaper and heavier. both good choice, it is up to customers' choice.
5. colors is optional