Arc'teryx Proton Hoody Men's Insulated Jacket

The Arc'teryx Proton Hoody is a breathable synthetic-insulated midlayer built for climbing and high-output mountain activities. Its 80gsm Coreloft™ Compact insulation works together with an air-permeable Fortius™ Air 20 face fabric and a 20d recycled nylon lining to regulate temperature and manage vapour build-up during movement.

The articulated patterning removes restriction, and the helmet-compatible insulated hood extends warmth where it is needed. This updated version uses a PFAS-free FC0 DWR treatment, a Fortius™ Air 20 face fabric with 42% recycled nylon, and Coreloft™ Compact insulation for improved stretch and breathability.

Key Features

Brand	Arc'teryx
Model	Proton Hoody Men's
Model Number	X000008436
Product Type	Insulated Hoody
Gender	Men's
Activity	Climbing, High-output mountain activities
Insulation	Coreloft™ Compact, 80gsm
Face Fabric	Fortius™ Air 20 - Plain Weave, FC0 DWR, 58gsm - 88% Nylon, 12% Elastane
Lining	20d recycled nylon plain weave, 42gsm - 100% Nylon
Hood	Helmet-compatible insulated hood
Sustainability	Fair Trade Certified™, bluesign® Approved Materials
Origin of Fabric	Taiwan, China
Origin of Dyeing	Taiwan, China
Origin of Manufacture	Bangladesh

Highlights

Versatile high performance designs for diverse activities and conditions.

Materials & care

Synthetic Insulation: Coreloft™ Compact, 60gsm - 100% Polyester, Synthetic Insulation: Coreloft™ Compact, 80gsm - 100% Polyester, Lining: 20d recycled nylon plain weave, 42gsm - 100% Nylon, Body: Fortius™ Air 20 - Plain Weave, FC0 DWR, 58gsm - 88% Nylon, 12% Elastane, Origin of fabric: TAIWAN, CHINA, Origin of dyeing: TAIWAN, CHINA, Origin of Manufacture: BANGLADESH, May release plastic microfibres into the environment when washing

Compatibility

The helmet-compatible insulated hood fits over a climbing helmet. The jacket is designed to layer under an outer shell for cold, windy or changing conditions.

How to use

Wear the Proton Hoody as a breathable midlayer for climbing and high-output mountain activities. Its air-permeable construction regulates temperature and vapour build-up during movement, and the helmet-compatible insulated hood extends warmth when needed.

Frequently asked questions What is the back length and chest circumference for size M and L? Size M: back length 77.1 cm, chest circumference 118.0 cm, hem circumference (relaxed) 110.0 cm. Size L: back length 79.6 cm, chest circumference 125.6 cm, hem circumference (relaxed) 117.6 cm. How does the fit of the current Proton Hoody compare to the older Proton LT Hoody in size M? The previous Proton LT Hoody fits slightly smaller than the current Proton Hoody. In size M, the Proton Hoody measures 118 cm chest width, 108 cm waist width and 110 cm hem width, while the Proton LT Hoody measures 116 cm chest width, 106 cm waist width and 108 cm hem width. Can the Proton Hoody be worn as a midlayer under a shell for skiing? Yes. It can be worn as a midlayer under an waterproof shell for cold, windy or changing conditions, or on its own for spring skiing or milder days. Its breathability is an advantage during high-intensity activity, while a windproof and waterproof outer layer is essential during low-intensity or long static periods. Does layering the Proton Hoody over an Atom or a shell add warmth? Layering the Proton Hoody over an Atom or a shell adds a small amount of warmth from the extra synthetic insulation, but it is built as an air-permeable midlayer designed to release heat during movement rather than trap it, so it does not retain heat like a purpose-built belay jacket.

Shipping & Delivery

Shipping is FREE on every order — no minimum purchase, no promo code needed.

• Processing time: orders ship within 1–3 business days (Monday–Friday, excluding holidays).
• Delivery time: after your order ships, most packages arrive in 2–5 business days.
• Tracking: you'll receive an email with your tracking number as soon as your order leaves our facility in Wenatchee, WA.
• Where we ship: we currently ship to addresses within the United States.
• Large items: TVs and large appliances are packed with extra protection and may require a signature on delivery.

Questions about an order? Email help@chantforge.com with your order number.

30-Day Free Returns

Changed your mind, or the size isn't right? You can return most items within 30 days of delivery, and the return shipping is on us.

1. Email help@chantforge.com with your order number and the item(s) you'd like to return.
2. We'll send you a prepaid return label and instructions.
3. Pack the item in its original condition with all tags, accessories and packaging, and drop it off with the carrier.
4. Once we receive and inspect your return, we'll refund your original payment method — usually within 5–7 business days.

Please note: items must be unworn or unused and in original condition. Footwear should be tried on indoors on a clean surface. LEGO sets must be unopened. If an item arrives damaged or defective, contact us within 48 hours of delivery and we'll make it right.

Read our full Refund Policy.

100% Authenticity Guarantee

Every item sold by Chant Forge is guaranteed to be 100% authentic. We never sell replicas or counterfeits.

• If you ever believe an item you received is not authentic, contact us and we'll issue a full refund, including any shipping costs.
• Products ship in their original manufacturer packaging whenever available.
• Have a question about a specific product? Email help@chantforge.com — we're happy to help.