Silicone ringed plunger design virtually eliminates coffee 'blow-by' for the most flavorful, mud-free coffee or tea. Double-walled, insulated lid and insulated ballistic nylon wrapped cozy will hold in temperature while brewing and serving. Capacity: 20 fl oz (personal), 30 fl oz, or 50 fl oz. Size: 4.3" x 4.2" x 6.1" (personal), 4.5" x 4.2" x 7.7" (30 oz), 6.2" x 4.8" x 9.6" (50 oz). Weight: 10.8 oz (personal), 10.3 (30 oz), 14.6 oz (14.6 oz).