Sea To Summit UltraSil Compression Sack 35L

The Sea To Summit UltraSil Compression Sack 35L is a lightweight, highly compressible storage solution designed for backpackers, campers, and travelers who need to minimize pack volume. Made from Ultra-Sil 30D Siliconized CORDURA® Nylon, this sack offers exceptional tear strength and abrasion resistance while remaining incredibly light. With a compression ratio of up to 3:1, it reduces the volume of your gear by approximately 66%, making it ideal for bulky items like sleeping bags and clothing.

Advantages

Ultra-lightweight design saves weight in your pack. Durable Ultra-Sil fabric resists tears and abrasion. Four extra-long compression straps with side-release buckles provide even compression. Drawstring closure with cord lock ensures secure sealing. Water-resistant construction protects contents from light moisture.

Suitable for

• Backpacking and hiking trips where space is limited
• Camping and outdoor adventures
• Travel organization for bulky gear
• Storing sleeping bags, clothing, and soft items

Key specifications

• Capacity (uncompressed): 35 Liters
• Capacity (compressed): Approx. 11.5 Liters
• Compression ratio: Up to 3:1 (66% volume reduction)
• Material: Ultra-Sil 30D Siliconized CORDURA® Nylon
• Closure: Drawstring with cord lock
• Compression straps: 4 extra-long straps with side-release buckles
• Seam construction: Double-stitched and bar-tack reinforced
• Water resistance: Water-resistant (not waterproof)
• Shape: Cylindrical
• Weight: Approx. 85 g (2.9 oz)
• Dimensions: 30 x 20 cm (11.8 x 7.9 in) when compressed

Recommendations

For best results, use this compression sack to store sleeping bags, clothing, or other soft items. Avoid overstuffing to maintain fabric integrity. Not intended for waterproof storage; use a dry bag for wet conditions.