Planet Bike Little A.R.S. Medium Youth Railed Seat - White Presta Valve and the tread pattern is

and the tread pattern is R-4602

Alfine S501

100% sealed bearings throughout

Size: 20" x 1-1/8" - 1-3/8" (ISO 451mm)

They have no warranty against flats and any claim needs to be made directly with the manufacturer

Planet Bike Little A.R.S. Medium Youth Railed Seat - White Presta Valve and the tread pattern isPint sized cyclists deserve comfortable saddles too. The Little A. R. S. bike seats are smaller versions of Planet Bike's popular Anatomic Relief Saddle. They come in three sizes to fit 12" 24" wheeled bikes and they're scrappy enough to hold up to youthful exuberance. This is the middle size of the 3 versions. It is white in color. *does not include seat guts. Foam padding relieves pressure on soft tissue Center recess for comfortable anatomic relief