GSI Outdoors Ultralight Java Drip Coffee Maker. Diminutive Drip Coffee Maker. The ethereal Ultralight Java Drip comes in an ultra-compact design that nests under any standard fuel cartridge, so who says you can,t keep your pack light and drink your coffee too? Step out of your tent and drip-brew some bold, backcountry bliss. Ultralight design weighs less than half an ounce. Ultra-compact design nests under a standard fuel cartridge. Sturdy legs clip to nearly any mug and hold the drip cone above the already brewed coffee. MAJOR DIMENSION: #2/#4 Filter Equivalent. WEIGHT: 0.4 oz. DIMENSIONS: 4.2in x 4.2in x 0.5in. MATERIAL: Nylon, Clear Polypropylene