The Blenpar 6 Pack Reusable Refillable Single K-Cups Coffee Filter Pod is designed for Keurig K400 and K425 brewers. These purple filter pods are compatible with single serve brewers and are a convenient and eco-friendly alternative to disposable K-Cups. The model is specifically designed for 2.0 pods, making it easy to brew your favorite coffee with ease. With this product, you can reduce waste and save money while still enjoying the convenience of single serve coffee brewing.