Swan Eco Extra Slim Filter Tips in this handy 200 pack size are perfect for rolling your own cigarettes with an added filter. Loose in a box, these Swan Eco Extra Slim Filters are biodegradable, but do not offer a lesser quality filter than the regular extra slim filter tips. These are some of the finest biodegradable filter tips on the market and use the finest products to offer you the customer a perfect filter whilst helping the environment.