Watertight seams keep waterproof packs waterproof during the most prolonged downpours.

If there is a rainforest hike in your future the Outdoor Research Hydrolite™ Pack Cover™ should be there too. This lightweight and waterproof pack cover comes in four different sizes to cover everything from compact day packs to big expedition packs. Like the best backcountry raingear the Outdoor Research HydroLite™ Pack Cover™ features taped seams and an adjustable drawcord for uniform waterproof protection even if you're out for forty days and forty nights. An integrated stuff sack allows for easy lightweight storage so you can keep your Outdoor Research HydroLite™ Pack Cover™ inside your pack for all trips without feeling the load. If you're feeling exceptionally pessimistic about dreary weather check out the complete line of Outdoor Research HydroLite™ Stuff Sacks--it could be your last line of defense against a wet trip.