Arc'teryx Proton Lightweight Hoody - Women's

Arc'teryx Proton Lightweight Hoody - Women's
Incl. 20% Tax

Availability: In stock

A lightweight, insulated, air-permeable women's softshell for summer alpine and rock climbing, the Proton Lightweight hoody ticks all the boxes.

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Incl. 20% Tax


Arc'teryx Proton Lightweight Hoody - Women's

A lightweight, insulated, air-permeable women's softshell for summer alpine and rock climbing, the Proton Lightweight hoody ticks all the boxes. Octa® Loft knit insulation provides warmth and allows airflow to maintain a comfortable temperature. The durable, breathable shell is abrasion and wind-resistant, made with slightly stretchy Fortius™ Air 20 cut for ease of movement. A secure stretch chest pocket accommodates your valuables and the low-profile insulated hood fits comfortably under your helmet.

  • Weight: 295 g
  • Lightweight highly breathable insulated jacket
  • Trim fit - Hip length with drop hem
  • DWR finish helps bead water from fabric surface
  • No Slip Zip™ front zip
  • Gusseted underarms
  • Articulated elbows
  • Helmet compatible, adjustable insulated hood
  • Two stretch woven zipped chest pockets
  • Two zipped hand warmer pockets
  • Adjustable hem drawcord
  • HemLock ensures jacket stays put under a harness when reaching overhead
  • Materials:
    • Octa® Loft, clean finished, breathable insulation provides thermal protection while maintaining a comfortable micro climate
    • Fortius™ Air 20 face fabric effectively balances air permeability and weather resistance with lightweight durability


Material Octa® Loft breathable insulation - 100% polyester | Fortius™ Air 20 - 84% nylon, 16% elastane
Weight 295g
Brand Arc'teryx
Colour Amaranthus
Gender Female
Size Guide

Arcteryx logo

Women's TopsUK SizeChestWaistHipSleeve
X Small 8 81 cm 65 cm 89 cm 72 cm
Small 10 86 cm 70 cm 94cm 77 cm
Medium 12 91 cm 75 cm 99 cm 80 cm
Large 14 99 cm 83 cm 107 cm 81 cm
X Large 16 107 cm 93 cm 117 cm 83 cm


Women's pantsUK SizeWaistHipShort inseamRegular inseamLong inseam
X Small 8 64cm 91cm 69cm 74cm 81.6cm
Small 10 69cm 97cm 69cm 74cm 81.6cm
Medium 12 74cm 102cmn 69cm 74cm 81.6cm
Large 14 81cm 109cm 70cm 75cm 82.6cm
X Large 16 91cm 119cm 72cm 77cm 84.6cm

Fit Guide


Streamlined fit. Patterned to keep material as close to the body as is comfortably possible to enhance moisture management, thermal efficiency, and fit comfortably under layers.


Trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably under outer layers.


Classic fit is cut comfortably throughout the chest, waist, hip, and thigh. It allows freedom of movement, provides shape, and layers comfortably under our regular and relaxed fit shells.



We try to keep the site updated with products that are in stock and despatch within 1-2 working days (Mon-Fri). Occasionally items ordered may be out of stock. If this should happen we will contact you to let you know when we will be able to despatch your order. Please note that all deliveries are made between 08.00 and 18.00 Monday to Friday and may require a signature.

Free Delivery

Orders are typically despatched with Royal Mail Tracked 48. Please note that this is a guideline only as a different delivery method may be used depending on the size/weight of your order – if you would like any more information on your delivery please contact us. Please note that postal services are dealing with unprecedented numbers of orders just now; there may be a short delay in delivery but we will get your order to you as quickly as we can.

Click and Collect

At checkout, please let us know you'd like to collect your order from our Hathersage store, either in the Comments box on the order page or by emailing us at [email protected], quoting your order number. Click and Collect items are available to pick up Monday – Friday, 9:00 am – 5:00 pm (excluding Bank Holidays), one working day after your order is confirmed.

When your item is ready to collect, you will receive a confirmation email; please either bring a print out of this or show us the email on your phone. You will also need to bring a form of ID which shows the billing address for your order.

Please collect from the back door at the end of Outside's customer car park:

Outside Ltd
Main Street
S32 1BB

Online Only Range

“Online only” products are not available for immediate despatch but you will still normally receive these items within 5-7 days of placing an order. If there are likely to be any further delays we will of course be in touch. These products cannot be purchased in our store.

Next Day Delivery - £5.95

Orders placed BEFORE 2pm Mon-Fri will be despatched the same day, usually with Parcelforce (requiring a signature). Any Next Day orders received after this time will be despatched the following working day. Please note any orders placed AFTER 2 PM on Thursdays will be despatched on Friday, but not delivered until the following week. Next Day isn't possible on Bank Holidays. If you have a mobile number on your account you will receive SMS notifications regarding delivery (UK mainland deliveries only).

Redirection of your order once despatched

We regret to say that we are unable to change the address or postcode on a parcel once it has been despatched. We therefore recommend that you check your delivery address and postcode carefully before completing the order as this will not be checked by us before despatch. We also recommend that orders are sent to an address where someone will be available all day to receive the parcel, e.g. a work address.

European and International Delivery

International service suspended

Unfortunately international orders are temporarily suspended due to the impacts of Coronavirus and Brexit related regulations. We are working to restore normal service when we can - please email [email protected] if you would like an update when we resume international services. Please accept our apologies for any inconvenience.


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