Enjoy better tasting, toxin free water all day with the Grayl Quest Water Filtration Cup wTap Filter. The Quest filters water straight from the tap in just seven seconds through a press action similar to a French press. Fill the plastic cup and press the stainless steel inner cup inside for almost instant filtration. The included tap filter is designed for use with tap water and removes heavy metals, chemicals, and other toxins from your drinking water. If you decide to take the Quest camping or traveling, switch out the filter with one of the three filters designed for each activity sold separate, and you're ready to go.