1. Size features
The 21-inch umbrella has a moderate diameter, which can provide users with sufficient shelter, but it is not too large to be carried. Whether walking in a light rain or walking in a hurry in a heavy rain, this size of umbrella can effectively block the rain and protect users from getting wet. For example, in daily commuting, a 21-inch umbrella can be easily put into a backpack or handbag for easy access at any time.
2. Umbrella structure
8-rib design
8 ribs provide a stable support structure for the umbrella. These ribs are evenly distributed around the umbrella and can withstand a certain amount of wind force, ensuring that the umbrella is not easily deformed or damaged in the wind. In breezy weather, the 8-rib umbrella can maintain a stable shape and provide reliable shelter for users; in stronger winds, although there may be a certain degree of shaking, it can usually withstand the wind and will not be easily blown over.
For example, when encountering a sudden strong wind outdoors, the 8-rib all-iron umbrella can better maintain its shape and provide certain protection for the user.
All-iron material
Iron material has high strength and durability. Compared with umbrella ribs of other materials, all-iron umbrellas are stronger and can withstand greater pressure and impact. The toughness of the iron ribs also makes the umbrella less likely to break during use, extending the service life of the umbrella.
For example, in the case of frequent use or accidental collision, the all-iron umbrella can better maintain its structural integrity.
3. Three fold umbrella design
Portability
The three-fold design makes the umbrella compact and easy to carry after folding. It can be easily put into a backpack, handbag or even a pocket, providing rain protection for users anytime and anywhere. This portability makes the 21 inches umbrella  8-rib all-iron three folding umbrella an indispensable item in people’s daily life, whether it is going to work, school, traveling or outdoor activities, it can be easily carried.
For example, when traveling, the three folding umbrella can be easily put into the suitcase without taking up too much space, and can be quickly taken out and used in case of sudden rainfall.
Convenient storage
The three folding umbrella has a regular shape after being folded, which is easy to store. You can use the matching umbrella cover or put it directly in the bag without looking messy. This storage convenience allows users to better manage the umbrella to avoid loss or damage.
For example, in the office or at home, the three folding umbrella can be neatly placed in a corner or drawer without taking up too much space.
In short, the 21 inches umbrella 8-rib all-iron three folding umbrella has become a practical rainproof tool in people’s daily life with its moderate size, stable structure and portable design. Whether in the streets and alleys of the city or in the natural environment outdoors, this umbrella can provide users with reliable protection.