Pack of 4 mesh gauzes, which sit in the bottom of any pipe bowl!
"TOBACCO LASTS LONGER & TASTES BETTER WHEN YOU USE THE DRY KULE"
The Dry Kule filters are an alternative form of hygienic pipe filter, which sits in the bottom of the bowl keeping the tobacco away from any moist residue, which helps the tobacco burn better and reduces the soggy waste in the bottom of the bowl.
These last a fairly long time but eventually get clogged up and wear, simply empty into the bin and replace!