When it comes to backpacking or thru-hiking, every ounce counts. That’s why gear enthusiasts swear by the Sea to Summit Ultra-Sil Compression Sack, a lightweight and incredibly efficient way to compress your gear into a compact package.

Ultra-Lightweight Materials

The Ultra-Sil Compression Sack is crafted from Sea to Summit’s proprietary Ultra-Sil material, which boasts an impressive 0.6 oz (17g) per square yard weight. This ultra-lightweight fabric allows the sack to be incredibly packable while maintaining its durability and water resistance.

Compression Technology

The real magic of the Ultra-Sil Compression Sack lies in its clever compression technology. The sack features a series of interlocking ridges that allow you to compress your gear into a tiny package, making it perfect for stuffing into tight spaces or attaching to the outside of your pack.

Versatility and Compatibility

One of the standout features of the Ultra-Sil Compression Sack is its versatility. It can be used for compressing clothing, sleeping bags, tents, and even wet gear like rain jackets or gloves. The sack’s spacious interior measures 18″ x 12″ (45cm x 30cm), making it suitable for a wide range of items.

Durability and Water Resistance

Despite its lightweight construction, the Ultra-Sil Compression Sack is surprisingly durable and water-resistant. It features a reinforced seam at the top and a secure zip closure to prevent gear from spilling out during transport.

Comparison to Competitors

When compared to other compression sacks on the market, the Sea to Summit Ultra-Sil stands out for its exceptional weight-to-performance ratio. For example, the REI Co-op Compression Sack weighs in at 2.4 oz (68g) per square yard, while the Black Diamond Alpine Start Sack tips the scales at 3.5 oz (99g) per square yard.

Conclusion

The Sea to Summit Ultra-Sil Compression Sack is an absolute game-changer for backpackers and thru-hikers looking to shave precious ounces from their gear list. Its ultra-lightweight materials, clever compression technology, and versatility make it an essential item for any serious adventurer.

Whether you’re tackling a multi-day hike or embarking on a quick weekend getaway, the Ultra-Sil Compression Sack is sure to become your new go-to packing solution. With its competitive price point of $20-$30, depending on the size and color, this compression sack is an affordable way to elevate your backpacking game.

Technical Specifications:

• Materials: Ultra-Sil (0.6 oz/17g per square yard)
• Dimensions: 18″ x 12″ (45cm x 30cm)
• Weight: 1.4 oz (39g) for the smallest size, up to 2.5 oz (71g) for the largest size
• Compression Ratio: Up to 75% compression
• Water Resistance: IPX3 rating (resistant to rain and snow)
• Durability: Reinforced seam at top, secure zip closure