Six luggage purchase basic knowledge

Suitcase bags need to understand the choice of certain knowledge, this article from six aspects to explain some of the luggage to buy some standing knowledge, including size, type, wheel, fabric, etc.:
1, bag size and weight In general, to the United States student tickets can take at least 1 boarding box, 2 shipping boxes. Board the size of the chassis: the length and breadth and not more than 115cm (120cm generally no problem); generally do not limit the weight. The size of the shipping box: the length and breadth of the sum of not more than 158cm; weight: the weight of each box control less than 23kg (including box weight), some airlines, such as the northwest, is 32kg.
2, zipper luggage type 158cm box is generally 30-inch suitcase or 30-inch trolley; we generally choose 30-inch suitcases, because of its easy to carry. 115cm box generally choose 20-inch trolley case.
In 3, the suitcase interior board In general, there are two kinds of interior suitcase: steel and IPS board (or other plastic or composite board). The best quality steel, but the box is also the heaviest; IPS board material can be, but easy to break. Recommended to buy built-in steel suitcase, not easy to break. Note: not the lighter the box the better, too light suitcase is very easy to break, because the material problems, do not go to that 0.5kg. Of course, the boarding box does not matter.
4, the rear of the suitcase This is a very crucial part: many manufacturers produce products, the rear wheel exposed, it is easy to be damaged by the steps. In general, half-packed rear wheels, more protection of the box, the use of more lasting, but the price is more expensive.
5, different fabrics fabric bags, the price is also different. When buying boxes, not just look at style and price, but also consider the durability. ABS box for heat, scratch resistance, impact resistance, suitable for long-distance travel. PP box for high temperature, the lightest weight, suitable for long-distance travel. EVA box mainly for light weight, good toughness, suitable for short trips.
6, other hand feel comfortable. Lock group is flexible. Lever is intact, the use of smooth. Whether the cloth quality is good, feel smooth, not easy to tear.