From Petunia Pickle Bottom, this kit features: Integrated straps attach Grid Caddy to stroller discreetly attaches to the base of the caddy when not in use Open caddy features 4 sections for Pixels and necessities of varying sizes Pixels feature zip-around openings and mesh tops for easy visibility Grid features wide side handles for hand-transport, and is designed to fit inside all full-size Petunia Pickle Bottom diaper bags (sold separately)  All pieces are machine-washable Compatible with all full-sized Petunia Pickle Bottom diaper bags Grid Caddy: 12"L x 5"W x 5.5"H, Weight: 7.8 oz Midi Pixel: 6"L x 5.6"W x 3"H, Weight: 1.8 oz Mini Pixel: 2.5"L x 5.5"W x 3.25"H, Weight: 1.3 oz Cool Pixel: 5.5"L x 5.5"W x 5.5"H, Weight: 2.2 oz Imported.