The long stemmed brushes are excellent for water bottles, mason jars, vases, etc. They are made of compostable beechwood and recyclable stainless steel with harder bristled Tampico fibres. Great for scrubbing stains and dried food but gentle enough to do pots and pans without using damage. The long stems and unique shape allow the brushes to get deep into skinny mouthed bottles or opening. Brushes are fully recyclable.