O2 Waterproof 20k Trail Pants

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    (4,5/5) out of 2 total ratings
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    The O2 Waterproof 20k Trail Pants are ultralight waterproof, breathable and windproof pants, designed for trail running. Manufactured with the 2.5-layer O2 membrane, waterproof (20,000mm H2O column) and highly breathable (20,000g/m²·24h). 100% thermosealed seams, YKK™ AquaGuard® zippers. Foldable into its own pocket, the O2 Pants are ideal for competitions and high intensity training sessions in the rain.

    FAST&LIGHT - 121g (XS)



    Trail Running


    For the purposes of this Regulation, the following definitions shall apply: 30 cm with automatic closure

    Double low adjustment system (rack + elastic)

    One-handed shooter for back pocket easy grip with gloves

    Waist adjustment system Custom Lace (elastic + precision lacing)

    Folds into its own back pocket

    Top Layer Fit: pattern to be carried over other garments

    Exceeds the Mandatory Material requirements of Ultra trail (such as UTMB)


    Size XS- 121 grams

    Size S- 126 grams

    Size M- 131 grams

    Size L- 136 grams

    Size XL- 141 grams


    O2- 2.5 layers

    66% Nylon 34% Polyurethane, 20D*20D, 63 g/m². Ripstop

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

    Breathability: 20,000g/(m²·24h) (TEST JIS L1099: 2006 METHOD B1).

    DWR C6 (Durable Water Repellency) 80/20 treatment

    Note: avoid direct contact with deodorants, makeup or sun creams as they can contaminate the membrane


    Most common size (Height/Weight), considering that this pants is worn on top of another (if not, the size could be one less)

    65 SSMML   
    70  SMMLL  
    75   MLLLXL 
    80    LLXLXLXL
    85     XLXLXLXL
    90      XLXLXL


    Information about care and maintenance

    Specific References


     Reviews (2) - Review moderation  

    Casi perfectos.
    Report an abuse

    Los utilizo para corredores sobre otro pantalón no impermeable , también los he usado con lluvia intensa y son perfectos.. Hay que tener un poco de cuidado con los crampones al ser una tela muy fina y sin refuerzos en los tobillos.

    By Pascual A. the 2024-02-03
    Super ligeros
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    Los compré porque me los pedían en una carrera y pensé que nunca los tendría que utilizar. Lo cierto es que ni ocupan ni pesan nada. Pero desde que los tengo los he utilizado en varias carreras e incluso entrenos y la verdad es que los llevo muy a gusto, tienen un patrón cómodo y el agua no entra por ningún lado.

    By Manuel T. the 2022-12-13

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