Osprey Ultralight Dry Sack 20L pacsafe Detachable chest strap: Yes

Detachable chest strap:  Yes

Built-In Strainer

Keep your water bottle secure but accessible with an interior pocket

wear rails and oversized YKK zippers

Although airplane cabins are pressurized to minimize the effects of rapid air pressure changes during flight

Osprey Ultralight Dry Sack 20L pacsafe Detachable chest strap: Yes[[Description]] An efficient packing solution, the 20 liter Ultralight Dry Sack keeps your gear organized and protected within your pack or travel luggage with a rectangular shape for a better fit. Available in five different volumes and four colors, it's easy to color code your organization too. [[Features]] Roll top waterproof closure Waterproof coated fabric and seams Rectangular shape for efficient packing Meets IPX5, waterproof non submersible D