Ultra-Sil Nano Day PackSale
MATERIAL(S): Ultralight 15D nylon nano fabric for strength, durability & water resistance
CAPACITY: 18 liters
DIMENSIONS: 11 x 8 x 19 inches
WEIGHT: 1 oz | 30g
Shipping & Returns
Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.
2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).
All orders are eligible for fast and easy returns within 60 days of purchase.
For more details, please check out our Help Center
Extremely light and packable – the UltraSil Nano Daypack is the perfect travel companion. This featherweight daypack can be easily stashed in your pocket or on your keyring, yet it offers 18L of carrying space. The asymmetrical zipper and siliconized Ultra-Sil Nano fabric makes for a compressible daypack that packs down to the size of an egg. Its construction gives it strength beyond its 1 oz / 30g weight, however, the non-padded shoulder straps keep our recommended maximum comfort load limit to 10 lbs / 4 Kg.
- Ultralight 15D high strength Ultra-Sil Nano nylon fabric
- Exceptionally compact packable design
- Siliconized nylon fabric for easy packing and water resistance
- Asymmetrical zipper design for tiny packed size
- Bar-tacks at stress points for added strength
- Exceptionally compact
One of the lightest coated fabrics that Sea to Summit manufactures, the 15 Denier Ultra-Sil is a siliconized nylon fabric with a polyurethane (PU) inner coating for mild waterproofing. This ultralight fabric has a 1,200mm hydrostatic head.
Best UseSummit Pack, Groceries, Travel
FabricUltralight 15D nylon fabric for strength and durability
Zip OptionsOne-way zipper closure
Frequently Asked questions
Can this bag hold heavy weights?
The seams and materials will support loads up to 10 lbs/ 4kg. However, the shoulder straps aren't padded, adjustable, or designed specifically for carrying a lot of weight. For heavier hauls, we recommend our UltraSil Daypack.
Is it durable?
With correct care, this pack can last many seasons. Even in the urban environments that it was designed for, sharp objects or abrasive surfaces can damage the fabric, while stress can damage the ultralight zipper.
Is it waterproof?
No. It's only water-resistant. Even though the pack is made with waterproof material, water can enter through the seams (which are not sealed) and zipper. A few minutes of light rain is okay, but getting stuck in a downpour would likely result in the contents of the pack getting wet.
What are the differences between the Ultra-Sil and Ultra-Sil Nano day packs?
The Ultra-Sil Day Pack is made from 30D Ultra-Sil Cordura nylon and includes adjustable shoulder straps and a daisy-chain webbing loop. It has a two-way zipper closure with a generous opening and weighs 2.5oz/ 72g.
The Ultra-Sil Nano Day Pack is more compact (packing down to the size of an egg) and made from 15D. It weighs 1oz/ 30g. With an asymmetrical zipper, lightweight fabric, and slightly smaller capacity (18L vs 20L), the Nano is a great option for those that need to save on weight and space.