What is the difference between a suitcase with and without an extension?

1. From the point of view of convenience: a suitcase with an extension.

2. From the perspective of capacity: The luggage space needs to have more flexibility, and there is also a telescopic layer, so that the capacity of the suitcase can be expanded by about 5cm instantly, and the volume can be increased by about 16%, and the expandability is relatively strong.

3. From the perspective of weight: most of the suitcases with expansion are fixed with steel wires around the box, which makes the box light and firm, so the soft box is also lighter when the luggage is weighed, leaving more space for the luggage. On average, it is about lighter than ABS PC box.

4. From the point of view of **: a suitcase with an extension will be a little more expensive than a suitcase without an extension. However, it has a larger space than without extensions, so it is still a little more affordable and cost-effective than those with extensions.

5. From the point of view of storage: the storage capacity with expansion is a little stronger than that without expansion, and the flexibility of the suitcase with expansion is also relatively strong, which is more suitable for places with small storage space, such as student dormitories, working dormitories, etc.

There is no comparison, it mainly depends on the actual need, and the expansion is best for those who don't like the box to be too big, but they don't like the box to be small.

Luggage, also known as suitcases and trolley suitcases, is a box that is carried to store items when going out, and it is one of the types of luggage. Suitcases are usually used to store clothing, personal care items and souvenirs needed for travel.

Suitcases can also be divided into hard-shell suitcases and soft-shell suitcases according to the shell. Hard-shell suitcases are more drop-resistant and suitable for luggage that requires more protection, while soft-shell suitcases are usually lighter in weight and more flexible in capacity, but soft-shell suitcases are more likely to burst open due to too many items inside.

Of course, the extension is good. It is large in size, can be retracted, and does not take up space. Although it is a little more expensive, it can bring a lot of convenience to travel.

From the perspective of capacity: the luggage space needs to have more flexibility, and there is also a telescopic layer, so that the capacity of the suitcase can be expanded by about 5cm instantly, and the volume can be increased by about 16%, and the expandability is relatively strong.

From the weight point of view: the general trolley box, the box frame is pressed by hand, it feels a little hard and hard, the special term for the bag is the honeycomb frame, in fact, it is similar to the beehive like the hard plastic with a hole in the middle, such a box frame will be easy to crack and oxidize after a hot and cold weather. The expandable trolley case is made of imported EVA foam material composite because EVA has the properties of softness, waterproofness, good elasticity and chemical corrosion resistance.

From the point of view of temperature: In the north or when it is cold in winter, the hard case is easy to crack after being frozen outside, while the soft box is not affected by the temperature. If you're in the south, you don't have to worry, the weather in the south is still very good.

From the point of view of storage: the characteristics of the expandable suitcase are more suitable for places with small storage space, such as student dormitories, work dormitories, etc.

It's good to expand, it's more flexible, and you can let go of the zipper when you need space.

I want to expand when I can't fit it, and I want not to expand when I can't hold it up.

That's definitely a good extension.,If you're big enough, don't open the excess.,Prepare for it.,We're using the extended one.,It's very practical.。。

It doesn't make a difference, basically I don't move this zipper.

Expandable trolley box, also known as telescopic box, is to have a layer of zipper to open the box volume to increase. Types of trolley cases:

1) Hard suitcase.

A rigid suitcase is a one-time stamped box, which is equipped with accessories such as frames, levers, handles, wheels, and linings. Generally, it is waterproof, pressure-resistant and wear-resistant. The main materials are PP, ABS, PC and other materials.

PP: Hard, dense, usually used in toolboxes.

ABS+PC: It refers to the processing method of ABS and PC mixture and then hot pasting a layer of PC film.

PC: Polycarbonate, colorless and transparent, heat-resistant, impact-resistant, flame-retardant, and has good mechanical properties in ordinary use temperatures. Common daily applications of polycarbonate include CD VCD discs, baby bottles, bulletproof glass, plastic lenses, headlight covers, astronaut helmet masks, smartphone cases, and more.

PC material solves the contradiction between weight and sturdiness of suitcases, and is a good choice. The best hard suitcase is made of pure PC material. If you search for "trolley box" in a treasure or a cat, you can see from the price that the cheaper hard box is ABS material or ABS+PC film material.

2) Soft suitcase.

All kinds of soft fabrics are sewn and wrapped on ABS or PP liners, with tie rods, handles, wheels, liners and other accessories. Generally lightweight. The main materials are leather, imitation leather (PU), nylon, polyester, oxford spinning, etc.

Some fabrics can be waterproofed, so they have a certain waterproof function.

The trolley box can be carried or dragged, the wheels of the trolley box we usually use are basically located at the bottom of the box, and modern people have designed a new form of trolley box, the box is designed into a cylinder shape, and the wheel is completely wrapped on the outside of the box, so that the drum design makes this trolley box can better adapt to different terrains, such as directly pulling the box can easily go up and down the stairs.

That is, there is a high-rise layer, and when there are too many things to use, the zipper is opened, and the high-rise is opened.