Which dry bag is right for me?

This depends a lot on what you intend to use the dry bag for. The Sea to Summit Big River Dry Bag is well suited as an all round versatile dry bag for particularly wet conditions, overland expeditions or when your adventure includes water/paddle sports. It will fit comfortably in our ROBO-KIWI harnesses, but is shorter, wider and heavier for its volume compared with ROBO-KIWI dry bags. For the best bikepacking-specific dry bag, we recommend using ROBO-KIWI double-ended dry bags as they have been specifically designed for fitting on bike handlebars.

→ See all Handlebar Bags
→ See all Bikepacking Dry Bags

For internal organisation and modular packing inside your front bag or saddle bag, we recommend using Sea to Summit Ultra-Sil Compression Sacks and Sea to Summit Ultra-Sil Dry Sacks.

For temporary extra storage on longer multi-day rides, brevets or bikepacking races where you need to periodically resupply or a lightweight summit day, we recommend the extremely compact and ultralight Sea to Summit Ultra-Sil Nano Day Pack.

Worth their weight and cost?

Once you have experienced modular packing with ultralight compression sack you’ll wonder how you ever lived without them.

Waterproof?

The fabric is waterproof enough for storage inside a pack, but the seams are not tape sealed, and the top does not utilize a roll-top closure. So - water resistant rather than waterproof.

What to put in it

The Sea to Summit Ultra-Sil™ Compression Sack enables you to pack large bulky items, such as your sleeping bag or down jacket, compactly inside your front bag or saddle bag without taking up too much space.