Whether you want to keep your kit dry or just compress your gear for better packability these compression bags and stuff sacks should be just what you're looking for. You'll find great solutions to help you protect your kit with products from great brands such as Exped, Equinox and Outdoor Research.
Outdoor Research 20L Lightweight Dry Sack 36898
Outdoor Research 15L Lightweight Dry Sack 36897
Outdoor Research 10L Lightweight Dry Sack 36896
Outdoor Research Mesh Ditty Sacks (Set Of 3) 38053