Castelli Alpha Jacket

MSP £ 230.00 , Save 40%
£ 138.00
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1 in stock, ready to dispatch.
UK, EU and Worldwide delivery available.

Reserve now, collect from our Esher Collection Point tomorrow

Reserve now, collect from our Hampton Wick Store from 12pm tomorrow

A jacket for autumn and winter riding, when you need protection from the wind and you want to ward off water penetration. The Castelli Alpha Jacket uses Windstopper® 150 fabric and adopts Castelli's innovative dual layer design, offering exceptional breathability and moisture control. With an asymmetrical YKK® Vislon zip, raw edge waste, wrists and an articulated collar for an amazing fit. Including three large rear pockets and a zippered front key pocket, this is a truly versatile jacket.

Castelli Alpha Jacket

The Castelli Alpha Jacket is Castelli's newest addition to their high-performance, race worthy jacket range. Its wide range of features has been incorporated to ward off water penetration through the use of Windstopper® 150 fabric that also offers exceptional breathability and moisture control, for a more comfortable ride.

A slim cut design has been achieved using the jacket's stretchy fabric. This offers the high-performance fit Castelli are known to achieve with their clothing line, and as well as looking good, actually improves warmth as less cold air is trapped inside the jacket.

Ventilation is key when wearing a cold weather jacket, so back ventilation areas have been added to keep you cool and dry. The jacket is held in place by a silicone gripper and reflective detailing allows you to be seen on even the darkest and dreariest of winter rides.

Castelli has added three well-proportioned pockets on the rear and a neat, easy to access zippered front pocket for stashing your mobile phone, keys or money in. Although not fully waterproof the jacket will stand up to a light shower or road spray.

  • High performance jacket
  • Pioneering Castelli Windstopper® fabric
  • Dual layer design offers exceptional breathability and moisture control
  • Collar is articulated for an enhanced fit
  • Asymmetric YKK® Vislon zip is easy to operate and sits flat
  • Easy to access, zipped front key pocket
  • Zips placed on the wrist for extra ventilation and a snug closure when wearing gloves
  • 3 well proportioned rear pockets with an added key pocket with zip
  • Slim fit
  • Raw edge waist is discrete and enhances the jacket's comfort and fit
  • Raw edge wrists offer a seamless transition between jacket and Castelli gloves
  • Rear ventilation for added breathability
  • Castelli silicone grippers
  • Reflective detailing
  • Weight: 381 grams
  • Temperature range 0-12°C, 32-56°F


Size Guide

UK Delivery Options

Free Delivery on all orders over £30

Estimated delivery within 4 working days (a delivery charge of £1.99 for orders under £30.00 will apply)

CollectPlus Delivery - £1.99

Have your order delivered to your local shop for just £1.99! For Highlands and Islands, please allow up to 5 working days. Orders can be shipped to UK CollectPlus locations specified on the website where they will be held awaiting collection for a period of 10 days.

Orders placed are normally dispatched within 2 working days.

Priority 1st Class Delivery - £2.99

Estimated delivery within 2 working days. For Highlands and Islands, please allow up to 5 working days.

Next Working Day Delivery* - £4.99

A guaranteed tracked courier delivery, place your order before 3pm, deliveries are made Monday to Friday.

Saturday pre 12 Delivery - £4.99

Saturday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Saturday pre 12pm by courier. Package must be signed for upon delivery.

Sunday pre 12 Delivery - £4.99

Sunday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Sunday pre 12pm by courier. Package must be signed for upon delivery.

Reserve and Collect** - FREE

Reserve & Collect is available on all items marked 'Collection'. It is a FREE delivery option that allows you to collect your order from either our Sigma Sport Store, Hampton Wick or our Reserve & Collect location in Esher. Just select the Reserve & Collect button in the basket.

* Next Working Day delivery is only available on items in stock in our warehouse and excludes pre- order items. Next Day refers to the next working day, Bank Holidays will add an extra working day to the estimated delivery lead times. UK next day excludes Saturday deliveries. This service is not available to some remote postcode areas. Please contact us for help.

** Reserve and Collect Collections - Clothing, parts and accessories: Next day. Orders placed on Friday, Saturday or Sunday will be available for collection after midday on the Monday (excluding Bank Holidays). Bikes: 4 days if in stock at the store, collect in up to 7 days (sometimes quicker) if in stock at warehouse.

London Same Day (Order Before 1pm)

We offer a Same Day delivery service into London. The cost is £25.00 under 2Kg and £35 over 2Kg. Place your order before 1pm, deliveries are made Monday to Friday. Please note this option excludes bicycles.

More information on our Same Day delivery options.

Bike Deliveries

All our bikes are fully checked and tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for despatch. All you have to do is add the pedals, rotate and tighten the handlebars. Typically we can deliver your bike in 7 - 10 working days.

Deliveries are made Monday to Friday on a pre-12pm delivery. One of our customer service team will be in contact to arrange a convenient day for delivery.

More information on all our UK delivery options.

International Delivery and Returns

We ship to over 100 countries using DHL for a fast and reliable delivery. To see the delivery cost, please add your items to the basket and proceed to the checkout.

International customers have 30 days from their order date to return the order. Goods must be returned in new condition with all original packaging intact and tags attached.

For full details, see this link.

Free UK Returns

We offer a free returns service for our UK customers. Sigma Sport will happily refund or exchange any item purchased at Sigma Sport, excluding Sigma Sport gift vouchers and personalised products except when faulty.

More information on the Sigma Sport returns procedure.

Stock Alert

Please alert me via email when this product is back in stock.

How do I complete my order?

You will be given the option to pay by finance as part of the checkout process. The exact finance options offered may vary depending on the other items in your basket.

Before choosing finance please read our full Terms and Conditions.