Soft Pods are specifically designed for compatibility with select single cup pod brewers. See the bottom of this page for a list of brewers that require soft pods. Soft pods are lighter in weight (about 7 grams) and are obviously soft, meaning that they are not firm like most pods. This gives more flexibility when using in brewers with tight clearance like the Senseo® and Hamilton Beach® brewers and will result in a better extraction in these brewers.