Sea to Summit Ultra-SIL Stuff Sack 1.5L Zinnia Yellow — ultralight water-resistant gear organizer, reinforced handle

The Sea to Summit Ultra-SIL Stuff Sack is a 1.5‑liter ultralight, water‑resistant gear organizer made from bluesign‑approved 30D Ultra‑Sil nylon designed for tidy, efficient packing.

Whether you’re thru‑hiking, bikepacking, or traveling with carry‑on limits, this compact stuff sack keeps small items and clothing sorted while adding virtually no weight. It blends a slippery, low‑friction fabric for easy stowing with reinforced details — a drawcord with a Capture Cord Lock, Hypalon pull tabs, and a webbing handle at the base — so it’s built to be both light and functional.

How durable is the 30D Ultra‑Sil fabric for frequent outdoor use?

The Ultra‑Sil material is a lightweight Cordura nylon that balances low weight with strong abrasion resistance. It’s bluesign‑approved and finished with a Non‑PFC DWR for water resistance, so it stands up to pack abrasion and light moisture without adding bulk.

• bluesign‑approved 30D Ultra‑Sil Cordura nylon for responsible manufacturing
• Non‑PFC DWR finish repels light rain and splashes
• double‑stitched seams and reinforced stress points for longer life
• Hypalon pull tabs resist wear at the closure

Will this stuff sack keep my clothes and gear dry?

It provides water resistance rather than full waterproofing; the fabric and DWR help shed moisture and brief exposure to damp conditions. For immersion or stormproof storage, pair it with a fully waterproof dry bag or rain cover.

• water‑resistant fabric repels light moisture and condensation
• drawcord closure with Capture Cord Lock reduces entry of splashes
• not rated for submersion — use a purpose‑built dry bag for full waterproofing
• Zinnia Yellow color improves visibility inside a pack

How does the stuff sack help with packing and access on the trail?

The slick Ultra‑Sil surface slides easily into tight pack pockets, and the reinforced base handle lets you pull it out quickly without digging. The wide drawcord opening with durable Hypalon tabs provides fast access, so you can retrieve items without unpacking everything.

• slippery fabric for smooth insertion and removal from pack compartments
• reinforced webbing handle at round base for quick grab‑and‑pull
• tear‑resistant drawcord and Capture Cord Lock for secure closure
• compact 4.5 x 8.1 in dimensions fit most pack pockets and cubes

What are the size and weight details I should know?

This model holds 1.5 liters, measures approximately 4.5 x 8.1 inches, and weighs only 0.04 pounds. Its minimal footprint makes it suitable for small items, underwear, electronics accessories, or a lightweight first‑aid kit when keeping pack weight low is a priority.

• volume: 1.5 liters — ideal for socks, base layers, or small gear
• dimensions: about 4.5 x 8.1 inches for easy stowage
• weight: roughly 0.04 pounds (ultralight)
• color: Zinnia Yellow for visibility and quick identification

Who is this for? Hikers, minimalist travelers, bikepackers, and anyone who needs organized, ultralight storage will appreciate the Sea to Summit Ultra‑SIL Stuff Sack 1.5L. It’s made for people who prioritize low weight without sacrificing useful features: quick access, a grab handle, and durable construction for regular use inside a backpack, daypack, or suitcase.