Lightweight technical insulating garment for FAST&LIGHT activities in cold conditions, featuring an excellent weight-to-insulation ratio and high compressibility. Its innovative asymmetric zipper design prevents discomfort even during long hours of use. It features two large chest pockets for quick access to gear. The forearm, with a tighter fit and stretch panel construction, provides great freedom of movement. Its ¾ zipper shaves off valuable grams while facilitating harness use.
Its outer fabric offers excellent wind and rain resistance (PFC-Free), which combined with Sorona® bio-synthetic insulation panels (100 gr/m2 on the chest and 80 gr/m2 on the back, arms, and hood), guarantee thermal protection and optimal breathability. Combine it with other W-Series garments (compatible zippers across different layers) and discover the lightest and most functional way to move in the mountains. Perfect as a second layer over the W-Series Merino Baselayer or as an insulating layer over the W-Series Stretch Pullover.
FAST&LIGHT - 336 g. (S)
Equipment
Elastic material-carrying chest pockets
Elastic panels in the armpit and forearm for total freedom of movement
D-ring on front pockets to secure gear
Asymmetric YKK® ¾ front zipper, compatible with harness
Double zipper for easy access to the interior
One-hand pull tab for use with gloves
Side tanka at the hem for a perfect fit
Action Fit, pattern designed for high-intensity activities
Weight
Size S: 336 grams | Size M: 355 grams | Size L: 380 grams | Size XL: 401 grams
Fabric
Exterior fabric: 100% High stretch nylon 20 Denier 0.05 ripstop, lightweight 40 gr/m2, windproof, DWR treatment, PFC-free.
Side fabric: 94% Polar Stretch Grid®, Polyester (94%) and Elastane (6%). Anti-pilling 4 (ISO 12945-2:2000). Grid structure that enhances internal ventilation.
Filling: Bio polymer SORONA®, 37% Bio-Polyester and 73% Recycled Polyester. 100 gr/m2 in chest and back and 60 gr/m2 in arms for improved mobility.
The Sorona® bio-synthetic filling by DuPont provides excellent thermal insulation, is highly compressible, durable, quick-drying, and eco-friendly. It contains 37% renewable plant-based ingredients and is biodegradable under certain conditions. Sorona® fibers absorb very little water, maintaining their thermal properties even in rain or humidity.
Interior fabric: STORMFLEECE™ PRO
69% Recycled Polyester, 23% Polyester, 8% Spandex 4-way stretch.
Technology
The STORMFLEECE™ PRO fabric uses patented technology by Singtex® to create a single-layer fabric (without membrane) made from almost 70% recycled products that is wind and rain resistant, offers excellent thermal insulation, high breathability, durability, and a very soft touch. The STORMFLEECE™ PRO fabric leverages the resistance and flexibility of the fibers while significantly reducing material consumption. Its densely woven structure minimizes fiber and yarn waste, resulting in a unique fabric with a resistant exterior and soft interior feel.
The OS2O FAST&LIGHT line powered by STORMFLEECE™PRO enables the development of lightweight, resistant, and technical single-layer products. Fabric developed under the BLUESIGN® System Partner standard.
Size Guide
Size recommendation by Weight (kg) and Height (cm)
| kg / cm | 165 | 170 | 175 | 180 | 185 | 190 |
| 55 | S | - | - | - | - | - |
| 60 | S | S | M | - | - | - |
| 65 | S | S | M | M | - | - |
| 70 | S | S | M | L | L | - |
| 75 | - | M | M | L | L | XL |
| 80 | - | - | M | L | XL | XL |
| 85 | - | - | - | L | XL | XL |
| 90 | - | - | - | - | XL | XL |
