Sea to Summit Ultra‑SIL Dry Bag, Waterproof Ultralight Pack Sack, HighRise Grey, 5 Liter

The Sea to Summit Ultra-SIL Dry Bag is an ultralight 5-liter waterproof roll-top sack designed to protect and organize gear during backpacking, bike touring, and travel.

This compact dry bag balances minimal weight with dependable water resistance so you can keep clothing, electronics, and essentials dry without adding bulk. Constructed from 30D Ultra-Sil Cordura ripstop nylon with a slippery finish, it offers easy packing, translucency for content visibility, and reinforced seams with taped sealing to guard against moisture. The roll-top Hypalon closure and oval base are engineered to stay low-profile while resisting rolling, and a patent-pending replaceable buckle simplifies field repairs.

How well does this dry bag keep water out?

The fabric delivers a 2,000mm waterhead rating and the seams are double-stitched and taped, forming a strong barrier against splashes, rain, and brief immersion. The roll-top closure compresses the opening to limit water entry when rolled correctly.

• 2,000mm waterhead rating for reliable weather resistance
• Double-stitched seams with taped sealing for extra protection
• Secure Hypalon roll-top closure to minimize water ingress
• Translucent fabric helps you confirm a good seal visually

Is this bag suitable for ultralight packers and minimalist travel?

Yes — at just 0.07 pounds, the 5-liter Ultra-SIL is built for low-weight systems where every ounce counts. The streamlined shape and oval base make it easy to slip into tight pack spaces and reduce wasted volume compared with bulkier designs.

• Weight: approximately 0.07 lb (ultralight for multi-day trips)
• Dimensions when closed: 6.7 x 5.9 x 12.1 inches for compact packing
• Low-profile design fits in trekking pack pockets or bike panniers
• Slippery fabric finish eases stuffing and compressing items

How durable is the construction for repeated use and repairs?

The Dry Bag uses 30D Ultra-Sil Cordura ripstop nylon, which balances lightness with tear resistance. Reinforced stitching at stress points and tape-sealed seams improve longevity, and the patent-pending buckle can be swapped out quickly in the field if damaged.

• Bluesign-approved 30D Ultra-Sil Cordura ripstop fabric
• Reinforced stitching at stress points for tougher wear
• Tape-sealed seams reduce leak risk over time
• Replaceable field-repair buckle for quick on-trail fixes

How easy is it to organize and access items inside the bag?

The translucent material lets you identify contents without opening the bag, and the roll-top closure both compresses items and protects them from moisture. Its shape and size are ideal for clothing, a lightweight sleeping kit, or electronics protected in additional pouches.

• Translucent fabric improves visibility of packed items
• Roll-top can be rolled three times to reach labeled 5L volume
• Oval base helps the bag sit flat and resist rolling inside a pack
• Useful as primary dry storage or as internal organizer

Who is this for? The Sea to Summit Ultra-SIL 5L Dry Bag suits ultralight backpackers, bikepackers, minimalist travelers, and anyone needing a compact waterproof organizer. If you prioritize minimal weight, packability, and quick field repairability while still requiring sensible water resistance and durable construction, this dry sack is a practical choice.