Sea to Summit eVac Ultra-Lightweight Compression Dry Bag - 13L

In this review the Sea to Summit eVac 13L Compression Dry Bag is examined as a simple, lightweight solution for keeping soft items dry and compact inside a pack or bike bag. The bottom line: this bag is for people who need dependable internal dry storage that also compresses gear to save space, because its Evac fabric base lets air be pushed out while the roll-top Hypalon closure and taped seams keep water out. It reads like a practical tool rather than kit for heavy external submersion, and excels where minimal weight and reliable dryness matter.

Key Features

• Evac base: The waterproof but air-permeable Evac fabric lets you purge trapped air by squeezing the bag, making compression fast without a purge valve.
• Ultra-light construction: The Ultra-Sil 30D Cordura nylon main body keeps pack weight low while still resisting wear on the trail or road.
• Secure closure: The Hypalon non-wicking roll-top closure with a Field Repair Buckle produces a reliable waterproof seal for internal storage.
• Taped seams: Double-stitched and tape-sealed seams add long-term waterproof confidence where it matters most.
• Compression straps: Integrated straps allow even compression of soft clothing or sleeping layers to reduce volume and stabilize loads.
• Clean DWR: A non-PFAS durable water repellent finish reduces wetting without PFAS chemicals.

Who It's For

The eVac 13L is aimed at backpackers, bikepackers and multi-day boaters who need a lightweight, internal dry bag that also compresses soft items to free up space in a pack. Its low weight and compression ability make it a good choice for minimalist hikers or anyone carrying bulky clothing and sleep layers who still wants protection from incidental moisture.

Those who need a heavy-duty external dry bag for full immersion or prolonged exposure to rough surf should look elsewhere; this design is optimized for internal pack use and reducing volume rather than as a primary floatation or exterior sealing system.

Pros & Cons

Pros

• Very light and packable construction reduces carried weight while protecting gear.
• Evac air-permeable base speeds compression by allowing air out without letting water in.
• Double-stitched, tape-sealed seams and a Hypalon roll-top deliver a trustworthy waterproof barrier for internal storage.

Cons

• Not intended as a heavy-duty external dry bag for long-term submersion or repeated external abrasion.

Specifications

Capacity	13 Liter
Main fabric	Ultra-Sil 30D Cordura nylon (bluesign APPROVED)
Base fabric	Evac waterproof, air-permeable fabric
Closure	Hypalon non-wicking roll-top with Field Repair Buckle
Seams	Double-stitched and tape-sealed waterproof seams
Finish	Non-PFAS DWR
Use case	Internal dry compression storage

Our Verdict

The Sea to Summit eVac 13L is an excellent value for hikers, bikepackers and paddlers who want a very light, reliable way to keep clothes and sleeping gear dry while shrinking their pack volume. Its Evac base and taped seams deliver practical, low-weight performance for internal use, making it a smart choice when weight and compression matter more than heavy external durability.

Frequently Asked Questions

Can I squeeze air out without a valve?
Yes, the Evac base is air-permeable so you can push air out manually without a purge valve while keeping water out.

Is this safe for long-term exposure to rain or spray?
Yes for internal pack use and incidental spray-the taped seams and roll-top seal keep contents dry-but it is not designed as a heavy external immersion bag.

Does the DWR contain PFAS chemicals?
No, the DWR finish on the main fabric and base is specified as non-PFAS.