Abstract: A baby trailer safety structure includes a safety block affixed to one sidebar of the bottom frame unit of the baby trailer opposite to the other sidebar that is mounted with a trailer bar. The safety block has a sloping peripheral wall with an arc face to prohibit a young child carrying in the baby trail from standing up on the associating sidebar to collapse the baby trailer, enhancing the safety level of the baby trailer.

Abstract: A baby seat includes a seat shell equipped with a folding stand and straps for fastening to an adult chair, a seat back shell having two smoothly arched top protrusions at the top side to show the configuration of the head of an animal, two armrests connected between the seat back shell and the seat shell and a soft seat cushion configured to exhibit the configuration of an animal and divided into a seat back portion that carries a design and a seat portion, the seat cushion having a sleeve extended from the top side thereof for sleeving onto the seat back shell and two flexible tie cords respectively affixed to two opposite lateral sides thereof with stitches for insertion through insertion slots on the seat shell to tie the seat cushion to the seat shell, the sleeve having two curved portions fitting the smoothly arched top protrusions of the seat back shell to enhance positioning stability of the seat cushion on the seat back shell.

Abstract: A tandem jogging stroller is disclosed formed of a handlebar, two rear-seat rear frame bars, a rear wheel axle, two rear-seat front frame bars, two rear-seat side frame bars, a movable bracket, two rear bottom frame bars, two front bottom frame bars, two front-seat front frame bars, two front-seat rear frame bars, a front wheel bracket, and a handlebar control mechanism. The two front bottom frame bars are respectively connected to the movable bracket, and the movable bracket is coupled to and movable along the rear bottom frame bars. When collapsing the tandem jogging stroller, the movable bracket and the front bottom frame bars are moved backwards along the rear bottom frame bars to reduce the size for storage.

Abstract: A foldable baby trailer includes a bottom frame, detachably provided with two rear wheels, two rear frame bars, a handlebar, a top frame bar, two front frame bars, and a trailer bar provided with a front wheel. The handlebar, the top frame bar, the two rear frame bars and the two front frame bars can be directly folded up and closely attached to the bottom frame to reduce the size for storage when the two bottom ends of the handlebar are unlocked from the two rear frame bars. Further, the user can grasp the top grip of the handlebar with the hands to push/pull the foldable baby trailer and to use the foldable baby trailer as an independent baby cart after disconnection of the trailer bar from the bicycle.

Abstract: A frame structure for foldable baby trailer is disclosed to include a bottom frame formed of two side bars and a front bar and a rear bar, two vertical side frames each having two bottom frame bars respectively pivoted to the side bars and an arched top frame bar pivoted to the bottom frame bars, a transverse top bar detachably connected to the arched top frame bars of the two vertical side frames, a trailer bar pivoted to the front side of said side bar of the bottom frame and selectively locked between an extended position and a received position, and a bumper detachably connected between the side bars of the bottom frame.