Weight: 38 - 58 g Capacity: 3.3 - 6.0 L
$32.99 - $36.99
Pre-order
If we don't have a specific item in stock, you can still place your order. Pre-order items will generally ship within 3-4 weeks, provided that we have your selected fabric choices in stock for manufacture.
In stock items will generally ship within 3-5 working days.
Special Edition Items
If you have selected a special edition item, you'll be able to choose a unique combination of colours for a completely custom look. Mix and match any available colour swatches to any panel of the bag - the shape remains the same, but the colours are up to you! We'll communicate with you via email as to your specific requirements. Due to the extra work involved, it may take us longer to complete your order.
PRE-ORDER CONDITIONS
- Items marked as 'pre-order' are sold on a pre-sale basis and are not currently in stock or available to ship
- Stock will be made to fill pre-orders; this typically takes 3-4 weeks and will ship as soon as an order is fulfilled
- Pre-orders are fulfilled in the sequence they are received (ie. they are on a waitlist)
- Any other products included in an order will not ship until the pre-order item is available to ship
- If you want any other in-stock items earlier, please ensure you place a separate order for this
Sea to Summit Ultra-Sil Compression Sack
When you need to compress volume without significantly adding weight, the Sea to Summit Ultra-Sil Compression Sack is an excellent solution. Made from a 30D diamond rip-stop siliconized CORDURA® fabric this compression sack is far tougher than its weight would suggest. Ideal for use inside your pack or travel bag when you need to compress clothing or bulky soft items to allow space for other essentials.
Please note that these dry sacks are made by Sea to Summit and are imported (not made in NZ).
Maximum compression
Extra long straps for even compression, allowing you to fill the sack to capacity.
Tough, lightweight & water resistant
30D Diamond Ripstop Siliconized CORDURA® provides strength and a slippery finish for easy packing. 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.
Reinforced with bartacks
Bartacks at stress points for added strength.
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.
| Model: | ultralight |
|---|---|
| Product Code: | STS_CS |
| Weight: | 38 - 58 g |
| Capacity: | 3.3 - 6.0 L |
| Height: | 25 - 35 cm |
| Width: | 13 - 15 cm |
| Depth: | 13 - 15 cm |
Compressed Volume
2XS / 3.3L -> 1.3L
XS / 6L -> 2L
Size Guide
2XS / 3.3L: a medium weight down jacket or the very lightest weight summer sleeping bag.
XS / 6L: a lightweight sleeping bag.
