While appearing like a regular house, there are many bikes on a grassy area outside. The owner, Rydel, will give the player a bicycle upon learning that he or she has traveled from Littleroot Town to Mauville on foot. This serves, as put by a non-player character later in the game, as advertising: the gift bicycle has Rydel's name written all over it.
The bicycle shop has no affiliation with the bike shops of the Kanto and Johto regions. It is the only known bike shop in the Pokémon world to sell two different bicycles: the Acro Bike and the Mach Bike. While only one may be taken at once, Rydel is more than willing to exchange one bike for the other at any point in the game. This must be done to complete certain events and overcome certain obstacles, as each bike performs differently. Instruction manuals for each bike can be found on a pair of tables in the side room of the shop.
In Generation VI, after the Delta Episode, the player has the opportunity to carry both bikes at the same time. After advertising the bikes to certain NPCs, the player will receive the counterpart bike of the one they are currently using as thanks for their continued advertisement of the Rydel brand. The NPCs are located: