Pack O2 Waterproof Ultra Trail Cap Woman

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  • M
  • L

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The O2 Waterproof Trail jacket 30k is a waterproof jacket, extremely breathable, ultra lightweight and 100% windproof for women. It is a garment designed for trail running and fast activties with a weight of only 173 grams. Manufactured with the new O2 30K membrane of 2.5 layers which offers a guaranteed (test) waterproof protection of 20,000 mm and a transpiration capacity of MVTR: 30,000 g/ ((m2·24h). 100% heat sealed seams, waterproof zippers from YKKTM AquaGuard®.

A carefully crafted garment designed to protect trail runners under the most adverse conditions without affecting their performance.

FAST&LIGHT - 160g (XS)


Trail running, Skimo, FAST&LIGHT Alpinism


Mixed cuff, prevents from water saturation

Chin-Guard, zipper protected to prevent friction with the chin

Automatic waterproof Cental YKK® Zipper®AquaGuard®. It locks at the desired height

Button (hidden) on the zipper to be able to wear the garment open and ventilated

Waist adjustment by system One hand stopper

Water repellent external treatment DWR

Foldable in its own chest pocket

Outdoor Fit: Comfortable women-specific pattern offering complete freedom of movement


Size XS: 160 grams

Size S: 169 grams

Size M: 175 grams

Size L: 183 grams


O2 - 2.5 layers (important to wash without turning it) 

100% Nylon 60 g/m². Ripstop. Polyurethane monolithic membrane.

Waterproofing: 20,000mm water column (JIS L1092 TEST: 2009 - 7.1.2) 

Breathability: 30,000g/(m²·24h) (TEST JIS L1099: 2006 METHOD B1)

In order to reduce the risk of contamination, BAT is to use one of the techniques given below

Laboratory report

Note:as he fabric and the membrane are the thinnest and lightest that exist for a jacket of these characteristics. Its use with some backpacks may cause friction on the fabric, also depending on factors such asweight distribution or how tightly the backpack fits.


The O2 WP Trail jackets have been designed to be used in aerobic activities and be subjected to intense use.  Together with one of Japan's leading textile manufacturers, we have developed a fabric tailored to the garment, following our FAST&LIGHT design philosophy. We combine high waterproof/breathable capacity and durability in an ultra light fabric (60g/).


Most common size (Height/Weight)

70   MMLL
75    LLL


Product measurements

medidas OS2O



For proper maintenance of O2 - 2.5 layer membranes follow these recommendations:

 It is important to wash the garment regularly, especially after wearing it in a sweaty, intense aerobic situation or after being exposed to a chemical that may affect its properties.

Wash the garment alone or with other breathable waterproof garments. Do not bring inside out.

Machine wash (never hand wash) in cold water at 30 oC.

Do not use softeners.

5. Use liquid detergent, not to use bleach, avoid powdered detergents.

To increase the duration of the garment and its properties, we recommend the use of nikwax® specific products.

7. Rinse several times (at least two rinse cycles) if necessary, until it doesn´t have any soap smell.


Presentation in action of the O2 Waterproof 30k Trail Jacket by the OS2O Trail team.

Ultra light, extremely packable and very breathable trail running cap. Short flexible brim that protects your face while allowing a wide visibility and makes it packable in a pocket of a running belt. Built with Cool2Dry® very light and quick dry provides a cool and ventilated feeling while protecting from sun, wind and rain.

An ideal accessory for any trail running activity under the sun, wind or rain.


OS2O hecho en España


Trail running


Inner band and mesh in Cool2Dry® breathable that absorbs sweat and dries quickly

Back closure composed of tape + connector + elastic tape providing durability and quick millimeter adjustment

NIFCO® connector a flat surface which ensures comfort and staying in position even on very windy ridges

Inner pocket for residual tape

Reflective logos on the front (OS2O) and subsequent (FAST&LIGHT)

Folding in a pocket

Double layer of windproof and waterproof nylon on visor and front

Soft and flexible visor, can be folded without changing its structure


Single size42 grams




Back mesh and sweat strip in Cool2Dry® that ensures lightness, breathability and quick drying.

Front and visor. This is 100% nylon, windbreaker. In the case of vehicles of categories M1 and N2 with a maximum mass exceeding 2000 kg:


Single size (54 to 61 cm)


Information about care and maintenance

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