Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl)
The Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl) is more than 50% lighter than the standard Sea to Summit Dry Sack it replaces. It is built from Ultra-Sil™ nylon — a polyurethane-coated siliconized Cordura® that is one of the lightest and toughest waterproof nylons available — so at 13 liters of capacity the whole sack weighs just 1.4 oz. You no longer have to choose between keeping gear dry and keeping the pack light.
Features
Super compact and ultralight — 1.4 oz for 13 liters
Ultra-Sil™ nylon: polyurethane-coated siliconized Cordura® for waterproofing and durability
Watertight, non-wicking Hypalon® roll-top closure with a stiffener at the top for a better seal
Soft and flexible with a slippery finish for easy packing
Nearly transparent, so you can see the contents without opening it
All seams double stitched and tape sealed
Round base on this size; the smaller sizes use flat bottoms
Colors: kiwi green, sky blue and orange
Specifications
Model
Ultra-Sil™ Dry Sack – 13 Liter (L)
SKU
stsultrasildrysackl
Size (dia. x ht.)
8.5" x 21"
Weight
1.4 oz / 40 g
Volume
13 L
Fabric
Ultra-Sil™ PU-coated siliconized Cordura®
Closure
Non-wicking Hypalon® roll top with stiffener
Seams
Double stitched and tape sealed
Proper Use
Any roll-top dry sack has to be closed correctly to keep water out. Fold the Hypalon® strip down first and make at least three rolls before clipping the buckle.
Avoid contact with sharp objects and high-abrasion surfaces, which can compromise the waterproof fabric.
Sea to Summit recommends double-bagging sensitive electronics (one dry sack inside a second). For maximum protection use a waterproof hard case.
Frequently Asked Questions
How light is the Sea to Summit Ultra-Sil Dry Sack 13L?
The Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl) weighs 1.4 oz (40 g) for 13 liters of waterproof capacity. That is more than 50% lighter than the standard Sea to Summit Dry Sack of the same volume, which is the whole point of the Ultra-Sil™ line.
What is Ultra-Sil fabric on the Sea to Summit Ultra-Sil Dry Sack 13L?
Ultra-Sil™ is a polyurethane-coated siliconized Cordura® nylon. Siliconizing the fabric makes it slippery, tear-resistant and very light, and the PU coating provides the waterproof barrier. On the Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl) it also makes the sack nearly transparent, so you can identify contents at a glance.
How big is the Sea to Summit Ultra-Sil Dry Sack 13L?
The Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl) measures 8.5" in diameter by 21" tall and holds 13 liters. It is the L size in a range that runs from 1 liter (XXS) up to 35 liters (XXL).
How do you close the Sea to Summit Ultra-Sil Dry Sack 13L properly?
Fold the Hypalon® strip at the mouth down first, then roll the top down at least three full turns before clipping the buckle. The stiffener sewn into the top of the Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl) helps the roll hold its shape and seal evenly; fewer than three rolls will let water track in.
Can the Sea to Summit Ultra-Sil Dry Sack 13L be submerged?
No. The Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl) has tape-sealed seams and a watertight roll-top closure that shrug off rain, spray and splashes, but like every roll-top fabric dry sack it is not built for prolonged submersion. Double-bag electronics or use a waterproof hard case for that.
Where can I buy the Sea to Summit Ultra-Sil Dry Sack 13L?
You can buy the Sea to Summit Ultra-Sil Dry Sack 13L (stsultrasildrysackl) at Going Gear, an authorized Sea to Summit dealer. Every sack ships new in original packaging with the full manufacturer warranty.
