Arc'teryx Delta Jacket Men's Color:Black This wrist-based Pulse Ox sensor3

This wrist-based Pulse Ox sensor3 monitors blood oxygen saturation levels to support advanced sleep monitoring and altitude acclimation

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using a combination of a baffled air cell

Best-selling ActiveIce™ technology works more efficiently and effectively than ever before

Arc'teryx Delta Jacket Men's Color:Black This wrist-based Pulse Ox sensor3A new type of fleece, a new level of performance. Still soft, still breathable, its elevated with an innovative octagonal hollow core construction for a much better warmth to weight ratio and a smooth face for easy layering and improved durability. A trim fit patterned to move and low profile seams that reduce chafing combine to create a technical, comfortable fleece for all your mountain missions. Size XS, S, M, L, XL, XXL Weight 240g 8. 5 oz Fit