Stainless Steel Push-Type Coffee Brewing Filter 1. Material: stainless steel 2. Simple and practical, say goodbye to complicated brewing processes and enjoy the quick and enjoyable experience of freshly ground coffee anytime, anywhere. 3. Reusable, environmentally friendly and energy-efficient, eliminating the need for additional consumables. 4. Portable, with a compact size, it easily fits in a bag or suitcase, making it perfect for daily use, business trips, camping, and other outdoor activities, allowing you to enjoy delicious coffee on the go. 5. A unique pressure piston system combined with a built-in stainless steel spring drive allows for precise control of extraction time and fully releases the rich oils in the coffee grounds with just a gentle pressure. 6. Made of stainless steel, it ensures durability and practicality, and is easy to clean and maintain, making it comfortable to use every time. 7. Dimensions: Small size: 5.7 x 3.8 cm, height: 19.5 cm; Medium size: 6.4 x 5 cm, height: 21 cm