Shark shktanknbag Magnetic Motorcycle/snowmobile ATV Waterproof Tank Bag for GPS, Cell Phones, Blackberries, Iphones, Droids, Amplifier 5 L x 3H FRONT POCKET HAS A CLEAR OPENING FOR A GPS, CELL PHONE, AMPLIFIER, etc LARGE ZIPPER POCKET WILL FIT ON ALL MOTORCYCLES / SNOWMOBILES WITH MEDAL GAS TANKS HAS TWO MAGNETS FOR GOOD HOLDING POWER 5"L x 3"H x 1 1/2" THICK