Sea to Summit Ultra-Sil Dry Sacks are a super light weight dry sack designed for use inside a pack. Made from Siliconised Cordura for maximum durability Ultra-Sil Dry Sacks will keep your pack light and you gear bone dry!
Sea to Summit says:
The Ultra-Sil® Dry Sack is the ideal dry sack for backpackers who need to protect their belongings from wet weather. They are 50% lighter than our Lightweight Drysacks but slightly heavier than our Ultra-Sil Nano Drysacks.
Getting very good reports about the Drybags from customers. These Sea to Summit (STS) Ultrasil Drybags are a similar product to POD Ultralite Drysacs - the difference is that the POD version has a larger buckle fastener and a haul strap across the base this makes the POD sacs a few grams heavier in each size.
I have 5 of these in various sizes and colours, and they all perform well. I use them for storing food, electronics, spare clothes, sleeping mat and pillow and one for my tent. They feel very durable and have kept my kit dry in some pretty crap weather. I once packed my soaked tent back into one and it kept all the moisture in and off of the rest of the contents in my bag. Even if eventually they lose their DWR coating (like other owners have reported) they are still excellent for packing kit down small, and organisation. However, I still strongly recommend using a pack cover to take the brunt of the rain and only ever use these as a last barrier of defense.
Ultralight Outdoor Gear Limited
September 24, 2018 | Christopher Smith
Absolutely waterproof
Really great bags. I packed my clothes in the 13L bag on a two week hike and I noticed each time I unpacked that not only had no water got in, it hadn't even let any air in. Completely impermeable. Can't comment on their durability as I only used the bag for two weeks, but it showed no sign of wear that I can see.
