When doing roller skating, the most important equipment is out roller skates. Are roller skates professional and what are the classifications? In fact, roller skates can be divided into two categories according to their structure: double row roller skates and single row roller skates. There are many classifications in single row roller skates, so today I will focus on the classification of single row roller skates. 

inline skates
Single row roller skates are also called inline roller skates. As the name suggests, the wheels on each shoe are arranged in a straight line. They are mainly divided into the following types according to their functions: casual shoes, speed skating shoes, flat shoes, roller skating shoes. and extreme shoes.

double row skates
Roller skates are used for jumping, spinning and footwork of various difficulties in a dedicated venue, that is, international figure skating, also called figure skating. The so-called double-row roller skates, as the name suggests, are four wheels side by side in front and back, using wheels with a larger ground lateral area, with brakes on the front sole, and are the most widely used roller skates in major ice rinks.
speed skating shoes
In order to reduce the load and give full play to the strength of the ankle, the uppers are relatively short, the height is generally below the bare feet, and the flexibility is high. The uppers are made of full leather, which is better wrapped. Speed ​​skating shoes are generally based on 4-wheel or 5-wheel shoes, and now there are also 3-wheel shoes as entry-level training shoes.
Casual roller skates
For leisure, it is generally used for street brushing or leisure. The wheels are configured in the same size, and the right heel has a brake, emphasizing comfort, and the shoe shell should not be too soft, otherwise it may cause ankle sprain.
The knife holder and the upper shoe of this kind of shoes are generally integrated (except for a few high-end brands). The wheels are generally made of polyester material to ensure sufficient elasticity and gripping effect. The quality of the wheels directly affects the effect and safety of sports.

The wheels of children's models generally use wheels with a diameter of 84mm-90mm, while the wheels of adult models of roller skates for men generally use a diameter of 100mm-110mm. In order to match the large wheels, the knife holder is also longer than that of the general inline skates. Speed ​​skating shoes are characterized by a low center of gravity, so as to seek stability during sliding, and the friction force on the racing wheel side is large.

The upper of the shoe shell is divided into hard and semi-soft. The hard upper is wear-resistant, but has no plasticity. It is more suitable for braking, FSK and flat flower entry. The semi-soft upper has a certain degree of plasticity. Fitting, most semi-soft shoes have a thermoplastic function, and the base of roller skates for women mainly includes plastic, glass fiber, and carbon fiber. Of course, the materials are different, and the price difference is also different.
There is little difference in the shape of the upper. Some high-end shoes use a triangular support upper, which improves the flexibility of the ankle joint, but the stability is not as good as that of the general upper. The triangular support upper is a variety of high-strength fibers. In order to solve the problem of insufficient strength, the current triangular support uppers are replaced by high-strength plastics.
All hard shell shoes and some semi-soft shoes have removable inner liner, while other shoes in order to reduce weight, the inner liner and shoe shell are integrated and cannot be replaced. The tool rests are all removable and adjustable, all made of metal, without brakes.
The characteristics of flat flower shoes are mainly reflected in their wheels. The four wheels on one shoe are not the same size, but the middle two are slightly larger (generally 4mm larger than the diameter of the front and rear wheels), which makes the steering and various flowers. more flexible movements.