Sea to Summit Ultra-Sil Compression Sack 20L/Large OAC The Harness is fully adjustable

The Harness is fully adjustable for compatibility with both 30L and 60L barrels

0°C / 32°F Shape

allowing you to create the capacity you need for any trip

A smart fairing that easily attaches to any Yakima bar – and just about anyone else’s – to quiet wind noise and reduce drag

Holding the brake side of the rope helps engage the cam

Sea to Summit Ultra-Sil Compression Sack 20L/Large OAC The Harness is fully adjustableDescription Product Details Video When you need to compress volume without significantly adding weight, the Ultra Sil Compression Sack is an excellent solution. Made from a water resistant, bluesign approved Ultra Sil 30D nylon fabric with Non PFC DWR this compression sack is far tougher than its weight would suggest. Ideal for use inside your pack or travel bag when you need to compress clothing or bulky soft items to allow space for other essentials