Abstract: A bicycle attachable seat assembly includes a seat having a back portion, a bottom portion and a pair of opposite side portions for receiving an object therein. A pair of spaced apart vertical slits are formed in the back portion of the seat. An elongated strap passes through the vertical slits and extends behind a rear side of the back portion of the seat and has opposite first and second ends disposed in front of a front side of the back portion of the seat. The opposite ends of the strap are used to wrap around an object and thereby retain the object in the seat. An object gripping member is disposed through a centrally spaced vertical slot formed in the back portion of the seat and includes a substantially C-shaped member when viewed from a top thereof disposed over the bottom portion of the seat for making gripping contact with the object.