KANGA. MAV12. KASE MATE PRO 12 PACK. THE MAVERICK. The Kase Mate is made with a 3-layer insulating system which is designed to keep your drinks cold for up to 7 hours - without the hassle of ice or a heavy cooler. This cold retention cooler has all you need to have a great time with your friends and loved ones. It is built to be tough with seriously thick insulation. It is easy to carry and comfortable to use it features a strong woven nylon carrying strap a padded handle for comfort and a stealth pocket to keep your valuables protected from the elements.