O2 Waterproof Trail PRO Pants 30k
The O2 Waterproof Trail 30K Pants are ultralight, waterproof, breathable, and windproof overpants designed specifically for trail running. Made with the 2.5-layer O2 membrane, they provide outstanding waterproof protection (20,000 mm H2O column) and exceptional breathability (30,000 g/m²·24h). Featuring a comfortable fit that allows natural knee movement without restrictions, they are equipped with an innovative ankle adjustment system, including zippers for easy on/off without removing shoes, and a front toggle that can attach to shoelaces to prevent unwanted movement, even during high-intensity activities. With fully taped seams and YKK™ Coil waterproof zippers, these pants are packable into their own rear pocket, making them ideal for high-intensity training and competitions in the rain.
FAST&LIGHT - 121g (XS)
O2 Waterproof Trail PRO Pants 30k
The O2 Waterproof Trail 30K Pants are ultralight, waterproof, breathable, and windproof overpants designed specifically for trail running. Made with the 2.5-layer O2 membrane, they provide outstanding waterproof protection (20,000 mm H2O column) and exceptional breathability (30,000 g/m²·24h). Featuring a comfortable fit that allows natural knee movement without restrictions, they are equipped with an innovative ankle adjustment system, including zippers for easy on/off without removing shoes, and a front toggle that can attach to shoelaces to prevent unwanted movement, even during high-intensity activities. With fully taped seams and YKK™ Coil waterproof zippers, these pants are packable into their own rear pocket, making them ideal for high-intensity training and competitions in the rain.
FAST&LIGHT - 121g (XS)
Activity
Skimo, Trail Running
Equipment
YKK™ Coil® 30 cm zippers with auto-lock closure
Double adjustment system at the hem (zipper + elastic)
Hook-puller to attach the pants to shoelaces, preventing movement
One-hand rear pocket puller for easy use with gloves
Custom Lace waist adjustment system (elastic + precision cord)
Packable into its own rear pocket
Reflective logos on the front and back, 360° visibility
Top Layer Fit: designed to be worn over other garments
Exceeds mandatory gear requirements for ultra-trails (e.g., UTMB)
Weight
Size XS- 121 grams
Size S- 126 grams
Size M- 131 grams
Size L- 136 grams
Size XL- 141 grams
Fabric
O2 2.5-layer fabric designed for maximum lightness and technical performance
100% Nylon Ripstop, 60 g/m²
Hydrophilic polyurethane membrane with an excellent balance between waterproofing and breathability
Guaranteed 20,000 mm waterproofing (TEST JIS L1092:2009 - 7.1.2), ideal for heavy rain conditions (see test)
High breathability of 30,000 g/(m²·24h) (TEST JIS L1099:2006 METHOD B1), ensuring comfort during high-intensity activities
DWR C6 treatment (Durable Water Repellency) 80/20 for durable water repellency and protection against surface moisture
Technology
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/m²).
Size
Tmore usual (Height/Weight), considering that these pants are worn over another (if not, the size could be one size smaller)
| cm/kg | 155 | 160 | 165 | 170 | 175 | 180 | 185 | 190 |
| 50 | XS | XS | XS | |||||
| 55 | XS | XS | S | S | ||||
| 60 | XS | S | S | S | M | |||
| 65 | S | S | M | M | L | |||
| 70 | M | M | L | L | L | |||
| 75 | L | L | L | XL | XL | |||
| 80 | L | XL | XL | XL | ||||
| 85 | XL | XL | XL |
Maintenance
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.
Recommended products for washing, maintenance, and reapplying waterproofing
