- Brand: ARC'TERYX Thank you for viewing. I believe this is the Acrux SL from Arc'teryx. The color is blue系 (blue-based), and the size is 27.5cm. I am the first owner, and I purchased it at an outlet store in Vancouver. I've worn it about 2 or 3 times, so I don't think there's much wear and tear. I plan to ship it with simple packaging. No returns or exchanges to prevent swapping. Thank you.