Tear-resistant, robust and moisture-resistant waste bags for composting toilets made of at least 90% post-consumer recycled material (PE). The anthracite-coloured recycled bags are opaque and have two handles for easy removal and disposal. Manufactured from recycled plastics, the bags, which are certified with the Blue Angel eco-label, are particularly resource-friendly. Suitable for all Trelino® composting toilets and waste bins up to 15 l capacity.