When your Travel Backpack needs total protection from the elements, the ultra-packable Rainfly is your best friend. It’s not your run-of-the mill rain cover, either. Constructed from burly 200D siliconized ripstop nylon, the Rainfly packs into an integrated carry pouch. That pouch securely connects to exterior attachment points on the Travel Backpack (both 30 and 45L) and stowes neatly inside a magnetically sealed exterior sleeve. When the rain hits you can instantly deploy the Rainfly while it’s still connected to your backpack. Fits the following bags: Travel Backpack 45L, Travel Backpack 30L, and Everyday Backpack 30L. Note that fit will be looser on the 30L bags.