I do not know if it is dishwasher proof but would suspect not, due to the softness of the rubbery stuff / plastic it is made fromWe find it works very well used in conjunction with an 'under-bib' - made of fabric, as being mainly made of plastic, the Catch-all bib does not soak up spills and dribbles when the baby's drinking from a cup, and without the under-bib, we would find our sprog getting quite sogg