Sea To Summit UltraSil Compression Sack 20L

The Sea To Summit UltraSil Compression Sack 20L is an ultralight and durable compression sack designed for backpackers, campers, and travelers who need to minimize pack volume. Made from Ultra-Sil 30D siliconized CORDURA nylon, this sack offers exceptional strength and water resistance while weighing only a few grams. With a 20-liter uncompressed volume that compresses down to approximately 6.7 liters, it efficiently reduces the bulk of clothing, sleeping bags, or other soft gear. Four extra-long compression straps with side-release buckles provide even compression, and the drawstring closure with cord lock ensures secure packing. A grab handle on the base adds convenience, and double-stitched, bar-tacked seams reinforce stress points for long-lasting performance.

Advantages

Extremely lightweight and packable, the UltraSil Compression Sack saves valuable space in your backpack. The siliconized CORDURA fabric is highly abrasion-resistant and water-resistant, protecting your gear from moisture and wear. The four compression straps allow you to evenly compress contents, reducing volume by up to two-thirds. The grab handle makes it easy to pull the sack from tight spaces, and the reinforced stitching ensures durability even under heavy loads.

Suitable for

• Backpacking and hiking trips where weight and space are critical
• Camping and outdoor adventures requiring organized gear storage
• Travel for compressing clothing or soft items in luggage
• Storing sleeping bags, jackets, tents, or other bulky equipment

Key specifications

• Material: Ultra-Sil 30D siliconized CORDURA nylon
• Uncompressed Volume: 20 Liters
• Compressed Volume: Approx. 6.7 Liters
• Closure Type: Drawstring with cord lock
• Compression System: 4 extra-long compression straps
• Buckle Type: Side-release buckles
• Water Resistance: Water-resistant (not waterproof)
• Seam Construction: Double-stitched and bar-tacked
• Fabric Coating: Siliconized finish
• Base Feature: Grab handle on base
• Shape: Cylindrical
• Packability: Extremely lightweight and compact
• Strap Material: Durable nylon webbing
• Reinforced Stitching: Yes, at all stress points

Recommendations

For best results, use this compression sack to store sleeping bags or clothing. Avoid overfilling to ensure even compression. Not intended for waterproof storage; use a dry bag for wet conditions.