What Is the Sea to Summit Ultra-Sil 20L Day Pack?
The Sea to Summit Ultra-Sil is a featherweight, packable, 20L backpack designed for day hikes, travel adventures, or everyday carry. It's the kind of bag you forget you're carrying, until you need it. From summits to street markets, it gives you 20 litres of stash space in a bag that folds to the size of a tennis ball.
What Is It Made Of?
The pack is made from ultra-light 15-denier Ultra-Sil Nano nylon, designed to minimise weight without sacrificing strength. Despite its featherlight feel, this technical fabric offers excellent durability for its size, making it ideal for a compact day pack.
Siliconised for Water Resistance
The siliconised coating adds a smooth finish that makes the fabric easier to pack and provides reliable water resistance. It sheds light rain, mist, and splashes, protecting your essentials in variable conditions.
CORDURA Nylon Base
At its core, the material is based on CORDURA nylon, a trusted name in outdoor gear fabrics. Known for its abrasion resistance and long lifespan, it ensures the pack performs well despite its ultralight design.
Bar-Tacked Stitching at Stress Points
To reinforce durability, the construction features bar-tacked stitching at critical stress points, preventing tearing under load and extends the lifespan of the pack, even with frequent use.
Lightweight Weather Protection
While not fully waterproof, the pack provides dependable protection against light splashes, drizzle, or misty hikes. It keeps weight minimal while still guarding your gear against everyday outdoor conditions.
Non-PFAS Chemistry
This product is made without PFAS, often called “forever chemicals,” which are known to persist in the environment and pose health risks. By using non-PFAS chemistry, it delivers dependable performance while staying safer for both people and the planet.
Bluesign APPROVED
The Bluesign APPROVED label guarantees that the fabric meets strict standards for environmental responsibility, worker safety, and resource efficiency. It ensures the materials are produced with minimal impact, from chemical use to energy and water consumption.
What Are Its Features?
At just 72 grams, this is one of the lightest daypacks available. Its ultralight build makes it ideal as a backup or “just in case” pack for travel, day hikes, or commutes.
Packs into a Tennis-Ball-Sized Stuff Sack
The pack compresses into its tiny stuff sack, about the size of a tennis ball. This packability makes it incredibly easy to stash in your pocket, glove box, or main pack without adding bulk.
Surprising Load Capacity
Despite its minimalist design, the pack can comfortably carry up to 15 lbs (7 kg). The streamlined, unpadded shoulder straps reduce weight but provide enough support for short trips or urban use.
20L Storage Space
With a capacity of 20 litres, there's plenty of room for a jacket, water bottle, snacks, and a few essentials. It's an excellent choice for summit pushes, city exploring, or lightweight travel.
Urban-Friendly Details
A bike light attachment point adds extra versatility for commuters or evening adventures, making the pack just as handy in the city as it is on the trail.
Two-Way Zipper Access
The two-way zipper ensures smooth, convenient access to the main compartment. Its asymmetrical design minimises packed size, allowing the daypack to compress as efficiently as possible.
Features
- 15D Ultra-Sil Nano nylon
- Water-resistant siliconised fabric
- Packs into a tiny stuff sack
- Two-way zipper closure
- Bar-tacked stress points
- 20L capacity
- Attachment point for bike light
- Ultralight design
- Asymmetrical zip for compact storage