Swimmer wearing a Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red on the beach.
Front view of Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Interior view of Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red showing the black Sherpa fleece lining.
Back view of Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Side profile of a man changing underneath the Red Alter Evo long sleeve waterproof changing robe in Siren Red.
Peaked hood on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Back view of peaked hood on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Two-way YKK zip with with easy-hold pulls and guard on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Adjustable cuff detail on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Waterproof chest pocket on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red, ideal for storing your mobile phone.
Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red with inside zipped pocket.
YKK two-way zip with easy-hold pulls on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Large inside stash pocket, big enough to hold a hot water bottle, on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Red Equipment logo detail on Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Fit guide showing people of various heights wearing the Red Alter Evo changing robe as sizing recommendations are predominantly based on height to give you the right length of robe.
Size guide for the Red Alter Evo changing robe with chest and height measurements for customers who want to use the robe to get changed.
Size guide for the Red Alter Evo changing robe with chest and height measurements for customers who want to use the robe as a coat.
Size guide showing width, length and sleeve length across all sizes for the Red Alter Evo changing robe.
Men's Long Sleeve Dry Waterproof Changing Robe Alter Evo - Siren Red
Swimmer wearing a Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red on the beach.
Front view of Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Interior view of Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red showing the black Sherpa fleece lining.
Back view of Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Side profile of a man changing underneath the Red Alter Evo long sleeve waterproof changing robe in Siren Red.
Peaked hood on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Back view of peaked hood on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Two-way YKK zip with with easy-hold pulls and guard on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Adjustable cuff detail on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Waterproof chest pocket on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red, ideal for storing your mobile phone.
Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red with inside zipped pocket.
YKK two-way zip with easy-hold pulls on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Large inside stash pocket, big enough to hold a hot water bottle, on Red Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Red Equipment logo detail on Alter Evo men’s long sleeve waterproof changing robe in Siren Red.
Fit guide showing people of various heights wearing the Red Alter Evo changing robe as sizing recommendations are predominantly based on height to give you the right length of robe.
Size guide for the Red Alter Evo changing robe with chest and height measurements for customers who want to use the robe to get changed.
Size guide for the Red Alter Evo changing robe with chest and height measurements for customers who want to use the robe as a coat.
Size guide showing width, length and sleeve length across all sizes for the Red Alter Evo changing robe.
Men's Long Sleeve Dry Waterproof Changing Robe Alter Evo - Siren Red
Red Original

Men's Long Sleeve Dry Waterproof Changing Robe Alter Evo - Siren Red

£159.95 £139.95 Save £20.00
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Red Men’s Long Sleeve Alter Evo Waterproof Changing Robe – Siren Red

The Red Alter Evo is designed for those who won’t settle for anything less than top performance and standout style. Engineered with a 15k waterproof and 8k breathable recycled outer shell, this long sleeve robe keeps you protected from the elements while ensuring comfort before, during and after your swim or outdoor activity.

A soft Sherpa fleece lining locks in warmth while wicking away moisture, and practical details such as a peaked hood, roll-down cuffs, side stretch panels and a ventilated hem ensure full mobility and comfort in all conditions.

The Siren Red colourway is bold and eye-catching — a fiery chilli-pepper shade complemented by sleek black trim. Perfect for swimmers, paddle boarders and outdoor adventurers who like their kit to perform as well as it stands out.

Size Guide

For sizing please refer to the images.

Key Benefits

  • Waterproof protection: 15k recycled outer shell keeps you dry in all weathers.

  • Breathable comfort: 8k breathability regulates body temperature.

  • Warm fleece lining: soft Sherpa interior wicks moisture and insulates.

  • Smart design details: peaked hood, adjustable cuffs, stretch panels, ventilated hem.

  • Practical storage: waterproof chest pocket, fleece-lined hand warmers, stash compartments.

  • Eco-friendly: 100% recycled materials with PFC-free DWR coating.

Specifications

  • Waterproof rating: 15k

  • Breathability: 8k

  • Outer: 100% recycled polyester

  • Lining: 100% recycled polyester

  • YKK two-way zip with easy-hold pulls

Care Instructions

  • Machine wash at 30°C with zips fastened

  • Tumble dry on low, or dry flat inside-out

  • Re-waterproof with Grangers, Nikwax or similar after every five washes

Sustainability

Red is a certified B Corp, committed to making kit that lasts. The Alter Evo robe is built from premium recycled fabrics with a non-toxic, PFC-free DWR coating — reducing waste and protecting the environment.

Shipping Policy

At the Outdoor Swimmer Shop, we carefully curate a collection of high-quality products from independent brands who share our love of life in and around the water. When you place an order, your items are shipped directly from our brand partners — so you can discover a wide variety of products in one place, while still supporting small businesses.

UK Shipping

  • Standard delivery: £4.99 (whether you order one item or a basket full, you’ll only pay a single flat-rate shipping fee at checkout).
  • Delivery time: Most orders arrive within 2–5 working days. Many of our partners dispatch quickly (same or next day), while handmade or made-to-order items may take a little longer. If an item is unavailable or there are any unforeseen delays, we’ll contact you straight away.
  • Outdoor Swimmer Magazine: Postage is charged separately at £1.75 (UK only).

International Shipping

  • Availability: Most of our brand partners currently ship within the UK only. However, a growing number are able to ship worldwide.
  • Brands currently shipping worldwide include: Arvor Life, Bobbies, Booicore, Brighton Water Shoes, diptribe®, Mor Swimmy, North Coast Maid, Silk & Lawn and Warmcor.
  • Charges:

·       EU: £8.99

·       Rest of World: £14.99

Customs & Duties
If you’re ordering from outside the UK, please note that customs duties, taxes, or import fees may apply. These are set by your local customs authority and are not included in our prices or shipping charges. You’ll be responsible for paying these directly to the courier or your local government before delivery can be completed

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