Reusable for k- coffee cup, which can make coffee quickly with family and friends Made of high quality plastic, the O-ring seal on the cover prevents leakage Easy to pour, brew and wash - positioning tips: place the cup in the machine and rotate it gently. There are small holes to match the action of the machine to that the cup is completely closed Compared with for disposable paper filter or plastic refillable coffee filter, it is environmentally friendly. Compatible: K and K plus coffee machines Now you can use ground coffee and loose tea, which makes it very easy to put coffee in reusable pods. Material:plastic colour:Black Package Contents: 6 * Coffee accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.