Abstract: A crib bumper comprises flexible, resiliently cushioning bumper panel material defining a plurality of downwardly opening pockets spaced apart along a length of the bumper panel material, and a generally L-shaped insert for at least some of the pockets, each insert defining a horizontal leg structured and arranged to be slipped beneath a crib mattress and a vertical leg that projects upwardly alongside the mattress. The vertical legs of the inserts are structured and arranged to be received into the pockets in the bumper panel material, such that the inserts position the bumper panel material in a vertical orientation adjacent the crib mattress.