Ariel 75 – Women's Pack Vermillion Red – SM. Osprey's Best Selling backpacking series, the Ariel is known for its ability to be taken all over the world, from the summit of Everest to a backpack trip through your local wilderness. The fifth generation of Ariel has a reputation for combingin clean design, custom-fit and outstanding load-carrying comfort. The 75 liter volume is ideal for geary heavy trips in the backcountry.