The carradice carradry rucksack pannier is the ultimate bag for keeping your luggage dry and safe the bag is 100 water proof and can convert from being a pannier to rucksack in seconds this makes for a quick transition between locking up your bike and making it to your desk the bag also features a removable padded pouch with shoulder strap which can fit mdeium sized laptops or tablets max 27cm x 35cm x 6cm the comfortable padded rucksack harness with sternum strap is fitted in seconds vi