Sea to Summit - Chest Strap
Price : $7.95
Will retro-fit on any backpack, aiding in load stability and carrying comfort. Weight =

Sea to Summit - SN240 Pack Covers
Price : $28.95 - $67.95
"Super compact when you don't need them and totally waterproof and tough when you do! Size = Xsmall - 15 to 30 Lt, Small - 30 to 50 Lt, Medium - 50 to 70 Lt, Large - 70 to 85 Lt

Sea to Summit - Tie-down Straps
Price : $4.25 - $7.95
Use as replacements for lost items or to augment your current pack attachment system. Weight =

Sea to Summit - Ultra-Sil Pack Liner
Price : $41.95 - $54.95
Provides a totally waterproof bag to line the inside of your rucksack. Size = Small - 50 Lt, Medium - 70 Lt, Large - 90 Lt, Weight = Small - 74g, Medium - 98g, Large - 126g