1) Disposable paper filter bag for vacuum cleaner 2) Made by high quality paper media: a) 100% pulp media which meet the European Standard b) 10%-30% polyester fiber media which is used very popular in North America market 3)Different colors as customer's request 4) One layer, two layers and multi layers 5) Inner: different weight pulp media or melt blown which has good air permeability and dust retention (99.99%)