1.Keurig's reusable K-cups are made of stainless steel. When using our reusable K-cups, you reduce the amount of paper filters and plastic coffee capsules you use. 2.Keurig reusable coffee capsule design science: Coffee reusable k cup adopts integrated design, tightly sealed top cover, to prevent coffee overflow during use; The bottom and side walls are perforated 360 degrees to allow water to fully soak the coffee powder, optimize the coffee extraction, get richer flavor, flavor guarantees a delicious coffee, reusable K-cup filter is very useful for coffee lovers. 3. Reusable K-Cup Health & Safety - Stainless steel reusable K-cup design completely retains the natural oils and flavors of coffee. Brewed with stainless steel refillable K-cups, you'll taste coffee like never before! These reusable coffee pods keep the coffee authentic and dishwasher safe 4. K-cup reusable coffee filters are used with k-elite, k-select, k-compact, and Keurig 1.0 and 2.0 coffee machines. 5. Reusable K cups are easy to use, just pour the coffee grounds you need into the stainless steel coffee K cup, after use, just pour the coffee grounds into the trash and clean the reusable K cup filter with water.