Introducing the Thermalrunner Jacket, designed for runners navigating frosty conditions. This lightweight layer offers targeted insulation with 40g PrimaLoft® Gold Active Insulation, ensuring warmth without bulk. Its water-resistant nylon shell protects against wind and rain, while strategic pockets keep essentials within reach. Ideal for cold temperatures and quick weather changes, this jacket stows easily, making it perfect for those on the go.
From the brand: Top Description
Winter protection without the bulk – Janji's Thermalrunner Insulated Jacket features targeted insulation for warmth where you need it, and only where you need it.
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Sizing
Malik is 5'10" // he wears size M
Regular fit,
Size Chart
features
Strategic warmth
Targeted panels of 40g PrimaLoft® Gold Active Insulation provide warmth where you need it most
Multi-condition preparedness
Hyperlight, durable nylon shell is water-resistant and wind-blocking for whatever the trail may bring
Ready for anything
Stows into chest pocket for easy packability
Secure fit
Bungee hem allows for an adjustable fit on the fly, reducing exposure in windy conditions
Keep it separated
2 zip hand pockets and a zip chest pocket stash small essentials close at hand
Comfortable coverage
Zipper garage protects chin and neck
Visibility
Signature reflective logos for improved visibility in low light
materials + specs
Zephyr
100% nylon with PFC-free C0-DWR (durable water repellency)
PrimaLoft Gold Insulation Active
100% nylon (45% recycled)
Weight
136g / 4.4oz (M’s Medium)
Garment made in Vietnam
CFM is the rating that measures how windproof a fabric is - 0 is totally windproof. With a CFM of 16, our Zephyr fabric cuts most wind while staying highly breathable - ideal for running performance.
Highlights CP
Title: Thermalrunner Jacket
Header: For Frosty Miles in Extra Cold Conditions
Description: Hyperwarm + Hyperpackable Elemental Protection / Lightweight, Strategic Insulation / 3 Zip Pockets
Best for: cold temps, quick weather changes
Fit: classic
Designed for: 15~35
Shop the: Thermalrunner Jacket
