The Modula Java Cage is the perfect solution for carrying a hot cup of coffee on your early morning cycling commute. Constructed of engineering grade plastic its frame is fully adjustable to accommodate varying size coffee travel mugs. Designed to work perfectly with 12 and 16oz Starbucks style coffee tumblers the Modula Java Cage also features an adjustable rubber strap to firmly secure your tumbler/mug and prevents spilling of hot coffee due to rough roads. Fits height 175 - 240 mm lower diameter 60 - 78 mm and upper diameter 75 - 90 mm.