Arc'teryx Aerios 18 Backpack - Tatsu Size:REG Size 3 is equal to

Size 3 is equal to Medium

Two chest flap pockets w/ button closure

Durable ripstop shoulder + forearm panels

A lightweight pullover windbreaker here from Gramicci

rolls up when not in use

Arc'teryx Aerios 18 Backpack - Tatsu Size:REG Size 3 is equal toA hiking backpack for a day in the hills. Slightly more stripped back and minimalist in design compared with its competitors, the Aerios 18 still manages to be feature rich with intuitive adjustments. There's 18 litres of storage as well as two large side pockets for bottles or a rolled jacket, freeing up valuable space within. A breathable AeroForm back panel, fitted hip belt and dual sternum straps mean this is a very comfortable pack that feels