Every bumper we sell is made with the BREATHABLE option. Modpeapod's innovative patent pending design is the world's first interchangeable 2 stage bumper. It can be used as a traditional boutique plush bumper or filling can be removed via a zipper and the bumpers unique stand along design can be used as a protective, stylish, breathable bumper. Dr Approved SAFE! The only one like it on the market! Included in this modern 3 piece crib set is the bumper, soft minky fitted crib sheet, and tailored box pleat crib skirt with detail border.