Sea to Summit Ultra-Sil Dry Bag

Best For

• Backpacking and lightweight camping
• Travel and luggage organization
• Cycle touring and bike travel
• Organizing clothing and gear inside backpacks or duffels
• Users who prioritize minimum packed weight

Key Features

• Ultra-Lightweight Construction: Made from lightweight 30D Ultra-Sil fabric to provide waterproof storage with minimal added weight.
• CORDURA® Nylon: Strong 30D nylon fabric provides durability while maintaining an exceptionally light profile.
• bluesign® APPROVED Fabric: Main fabric meets bluesign® approval requirements.
• Semi-Translucent Material: Makes it easier to see and identify the contents of each bag without fully unpacking.
• Roll-Top Closure: Non-wicking Hypalon roll-top creates a reliable closure when properly rolled and secured.
• Field Repair Buckle: Sea to Summit's patented buckle design provides a replaceable closure system for easier field repairs.
• Taped Seams: Helps keep moisture from entering through stitched areas.
• Oval Base: Helps prevent the bag from rolling away on sloped surfaces and improves packing efficiency.
• Slippery Exterior Finish: Helps the dry bag slide easily into and out of tightly packed backpacks and luggage.

Specifications

• Brand: Sea to Summit
• Product Type: Lightweight Dry Bag
• Best Use: Backpacking
• Fabric: 30D Ultra-Sil CORDURA® Nylon
• Bag Material: 100% Nylon
• Buckle Material: POM
• Shape: Oval
• Hydrostatic Head: 2,000 mm
• Repair Buckle Size: 15 mm
• Available Sizes: 3L, 5L, 8L, 13L, 20L, 35L

Size, Weight & Dimensions

What's Included

• One Sea to Summit Ultra-Sil Dry Bag in the selected size/color

FAQs

What is the Ultra-Sil Dry Bag made from?
It is constructed from lightweight bluesign® APPROVED 30D Ultra-Sil nylon featuring CORDURA® yarns.

Can you see through the fabric?
The fabric is semi-translucent, making it easier to identify what is stored inside without opening the bag.

How does the bag close?
It uses a non-wicking Hypalon roll-top closure secured by Sea to Summit's patented Field Repair Buckle.

Why does it have an oval base?
The oval shape helps prevent the bag from rolling away on sloped surfaces and allows it to pack efficiently alongside other gear.

What sizes are available?
The Ultra-Sil Dry Bag is available in 3L, 5L, 8L, 13L, 20L, and 35L sizes. Each size is sold separately.

Care & Maintenance

Empty the dry bag after use and allow it to dry completely before long-term storage. Remove dirt, sand, or debris as needed and inspect the roll-top, taped seams, and buckle periodically for wear or damage. Avoid packing sharp objects that could puncture or abrade the lightweight 30D fabric.

Expert Insight

The Sea to Summit Ultra-Sil Dry Bag is especially useful when every ounce matters. Its extremely light 30D construction, semi-translucent fabric, and smooth exterior make it ideal for organizing clothing and other gear inside a larger backpack or travel bag without adding the bulk of a heavier-duty dry bag.