Fourth Element Xenos ARC 3mm Men's Wetsuit
Use this size guide to find the best fitting size for your new Fourth Element Xenos Wetsuit. Please contact us if you have any questions about the suits or require any further assistance with sizing.
Please note: Fourth Element sizes are designed to be snug. For a more comfortable fit, we recommend considering a size up than your usual dress size.
Men's Sizes
| Sizes | Height | Chest | Waist | Inside Legs |
| CM | CM | CM | CM | |
| X Small Short | 160 – 166 | 88 – 93 | 73 – 78 | 73 – 76 |
| X Small | 165 – 171 | 88 – 93 | 73 – 78 | 76 – 79 |
| Small Short | 165 – 171 | 93 – 98 | 78 – 83 | 76 – 79 |
| Small | 170 – 176 | 93 – 98 | 78 – 83 | 79 – 82 |
| Small Tall | 175 – 181 | 93 – 98 | 78 – 83 | 82 – 85 |
| Medium Short | 170 – 176 | 98 – 103 | 83 – 88 | 79 – 82 |
| Medium | 175 – 181 | 98 – 103 | 83 – 88 | 82 – 85 |
| Medium Tall | 180 – 186 | 98 – 103 | 83 – 88 | 85 – 88 |
| Large Short | 175 – 181 | 103 – 108 | 88 – 93 | 82 – 85 |
| Large | 180 – 186 | 103 – 108 | 88 – 93 | 85 – 88 |
| Large Tall | 185 – 191 | 103 – 108 | 88 – 93 | 88 – 91 |
| X Large Short | 180 – 186 | 108 – 113 | 93 – 98 | 85 – 88 |
| X Large | 185 – 191 | 108 – 113 | 93 – 98 | 88 – 91 |
| X Large Tall | 190 – 196 | 108 – 113 | 93 – 98 | 91 – 94 |
| XX Large Short | 185 – 191 | 113 – 118 | 98 – 103 | 91 – 94 |
| XX Large | 190 – 196 | 113 – 118 | 98 – 103 | 91 – 94 |
| XXX Large | 195 – 201 | 118 – 123 | 103 – 108 | 94 – 97 |
Fourth Element Xenos ARC Wetsuits 2025: The OceanPositive Revolution
Now Available for Pre-Order at Mike’s Dive Store - Expected Delivery January 2026
The next generation of sustainable dive wear is here.
Built for warmth, performance, and a lighter footprint, the all-new Fourth Element Xenos ARC redefines what a wetsuit can be - combining exceptional thermal protection with cutting-edge eco innovation. Designed for comfort across multiple dives, it’s the perfect blend of OceanPositive design, natural materials, and uncompromising performance.
Engineered for divers who value ease, comfort, and eco-conscious design, the men’s Xenos ARC 3mm wetsuit is perfect for liveaboards, warm-water adventures, and multiple dives per day. Slip into it with minimal fuss - thanks to low-friction, fast-dry linings in the arms and legs, getting in and out between dives couldn’t be simpler.
Crafted from Ocena®, a composite of natural rubber and recycled car tyres, this suit offers incredible stretch, warmth, and durability - all while being kinder to the planet. With 85% natural rubber, recycled linings, and water-based glues, the Xenos ARC 3mm performs like premium neoprene but without the environmental cost.
At its core, Thermoflex insulation keeps your torso warm, while the Hydrolock neck seal and Glideskin wrist seals help prevent water ingress so you stay comfortable for longer. Triple-glued and blind-stitched seams create a watertight barrier, and every detail has been fine-tuned for performance - from the smooth skin zipper pad to the cut-away heel notch for easy donning and doffing.
Features:
- Made with Ocena®: 82% bio-based natural rubber blended with recycled car tyres
- Recycled linings (42% polyester, 8% elastane, 50% nylon)
- Thermoflex thermal torso lining for warmth
- Hydrolock neck seal and Glideskin wrist seals
- Triple-glued, blind-stitched seams to reduce water ingress
- Smoothskin zipper pad for added comfort
- Abrasion-resistant knee pads for durability
- Cut-away heel notch for easy donning and doffing
- Fast-dry internal linings in arms and legs
The Xenos ARC 3mm feels so light and flexible, you’ll forget you’re wearing it — until you notice how warm you are. Built with eco-friendly innovation and the comfort of a second skin, this men’s wetsuit performs beautifully while doing its bit for the planet.
Pro Tips for Easier Donning & Longer-Lasting Seals:
Add Mcnett Neoslix to help with donning and doffing your wetsuit while also prolonging the life of the seals, or try the Waterproof Donning Socks. These Lycra socks are designed to make getting into your wetsuit effortless, protecting the suit from wear and tear and preventing you from getting stuck. They also provide comfort for barefoot fin users, helping to prevent painful rashes with a soft, protective layer.
OceanPositive by Fourth Element: Diving with Purpose
Fourth Element’s OceanPositive Collection was created with one clear mission: to protect the oceans we explore. Every product in this range is designed to reflect Fourth Element’s deep commitment to sustainability. By using recycled fabrics, responsibly sourced materials, and waste-reducing production methods, OceanPositive gear is made to perform beautifully while remaining gentle on the planet.
The OceanPositive ethos goes beyond the products themselves – it’s a statement of purpose. Every purchase of selected OceanPositive items at Mike’s Dive Store supports marine conservation, with 1% of each sale donated to Sea-Changers, an organization funding vital ocean conservation projects worldwide.
Explore the Fourth Element OceanPositive Range
VIDEO CONSULTATIONS NOW AVAILABLE: We're bringing our highly experienced and knowledgeable staff to you with live-streaming consultations. If you need help choosing the right bit of kit or the best size before buying or even advice on whether a purchased item is the right fit for you then book yourself a consultation appointment.
Click here for our handy guide on how to look after your wetsuit
We offer free tracked UK standard delivery on orders over £50 (Excluding Weights and Cylinders, as they must go on a separate service to your order)
Standard UK delivery and Next Business Day UK delivery rates are calculated at checkout and offers a number of courier options for maximum convenience to you.
International shipping rates depend on items, shipment weight and destination. Shipping costs are calculated at checkout.
Estimated delivery times are shown during checkout and reflect your chosen delivery method. More Details
60 Day Stress Free Returns
If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!
Mike's Dive Store offer an extended returns policy of 60 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back, and we will either exchange it or offer a full refund less any postage costs. Too easy!
Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee, but we will let you know about these items before we 'special order' them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return. More Details
Returning To Chiswick Store
We want to make your shopping experience as seamless and enjoyable as possible, even when it comes to returns. That’s why we offer hassle-free returns at our Chiswick store. But there’s more—when you visit to make a return, you can also pre-order items to be available for collection. This means we’ll have a range of sizes ready for you to try on, ensuring you find the perfect fit before leaving the store.
Shop with Confidence, Wherever You Are
To make things even easier, we offer complimentary video consultations with our expert team. Whether it’s before or after your purchase, our specialists can guide you through sizing, fit, and styling—all from the comfort of your home. It’s like having your own personal VIP shopping experience, tailored just for you.
From returns to reorders, we’re here to help you find exactly what you need with zero stress.
Book Video Consultation: Book Now
We offer the option for customers to choose ‘Pickup in store’ as a shipment method, allowing your order to be picked up from our Chiswick store at a time and date that works for you (within our business hours). The process is really easy, but we'll run through it here:
Step 1 - Add products to your cart:
Browse our vast selection of diving and snorkelling equipment, adding the kit you want to your cart.
Step 2 - Head to your cart:
Click on the cart icon to see a summary of the items you are about to purchase.

Step 3 – Review Your Order and Proceed to Checkout:
Once you're satisfied with the items in your cart, you can add a note to your order under the "Order Summary" section if desired. When you're ready to proceed, simply click "Checkout" to complete your order.
Step 4 - Customer Information:
If you have a Mike's Dive Store account, simply log in to autofill your details. If not, enter your email address, select ‘Pickup in Store,’ and then click ‘Continue to Payment’ to proceed.

Step 5 – Payment & Billing Details:
Select your preferred payment method and enter your payment information. Below, provide your billing details. If you're logged into your account, please double-check that your billing and contact information are up to date.

Step 6 – Review Order:
After entering your payment details, click ‘Review Order’ to proceed with placing your order. You will receive an email confirmation with your unique order number. We will notify you when your order is ready for collection, usually within 4 hours or sooner during our opening hours (Monday to Saturday, 10 AM to 6 PM). Please note that our hours may vary during the Christmas and New Year periods.
Our London Store Information:
Address:
Mike's Dive Store, 113 Power Rd, Chiswick, West London, W4 5PY
Telephone:
Local: 01202 037162
International: 0044 1202 037162
Email:
All Enquiries - support@mikesdivestore.com
Store Opening Times:
Mon - Fri: 10am - 6pm
Sat: 10am - 5pm
Sun: Closed
Need Help?
Our expert diving team is here to assist with your order, sizing, or product selection. We're divers ourselves, ready to support you!
Chat Hours:
Monday - Friday: 09:00 AM - 05:50 PM GMT
Prefer a call back? Just request it through the chat bubble!
Store Location
Mike's Dive Store
113 Power Rd, Chiswick, West London, W4 5PY
Store Hours
Mon - Fri: 10 AM - 6 PM
Sat: 10 AM - 5 PM
Sun: Closed
Bank Holidays: Store & Warehouse Closed (no dispatch)
Online Video Consultations
Unable to visit us? Book a live video consultation for tailored advice on equipment, fitting, or specialized gear. Get expert guidance from our team, face-to-face. Book Now
For more answers, visit our FAQs.







