The Sea to Summit Frontier Ultralight Collapsible Coffee Filter is a functional and space-saving solution for brewing the perfect coffee on the go. This pour-over filter can hold a single serving of coffee, approximately 30 grams of coffee grounds, and is equipped with a super-fine stainless steel mesh to catch coffee grounds while allowing essential oils through for a smooth brew. The low-profile, collapsible design ensures it packs compactly, making it ideal for camping or travel. The mount base is designed to fit the majority of mug and wide-mouth bottle rims, ensuring convenience and versatility during your coffee-making process. The filter is BPA-free and made from flexible food-grade silicone and stainless steel mesh.