What is a "rollerblade"?

a rollerblade, also known as an inline skate, is a type of roller skate that features a line of wheels in a single row along the bottom of the boot. They were first developed in the 1980s and have since become a popular recreational and fitness activity. Rollerblades typically have a hard boot for ankle support and a brake at the back of one of the skates for stopping. They are designed to provide a smooth, fast ride and can be used for various activities, including street skating, park skating, and aggressive inline skating. Rollerblading is a low-impact form of exercise that can help to improve balance, coordination, and cardiovascular fitness.