Wunderlich - Topcase Extreme Maxline (#30167)XL stands for our EXTREME Topcase maXLine with an incredible 47 litres of storage capacity, thats 7 litres more than our standard EXTREME Topcase Features EXTREME maXLine Topcase with a remarkable 47 litre capacity large enough to store a standard helmet Top loader: Easy to pack from above Stainless steel locking system with discreetly embossed Wunderlich brand logo 100% dust and waterproof thanks to a special sealing system Lashing eyes on the lid