Fourth Element Proteus II Women's 5mm Wetsuit
Sea-Changers marine conservation charity
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Delivery & Returns
Delivery & Returns
Delivery Information
We offer free tracked UK standard delivery on orders over £50.
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
Returns Information
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
Help & Support
Help & Support
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
Local: (020) 8994 6006
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.
Fourth Element have moved to a universal system (XS, S, M, L etc) from a number system (UK12, US10 etc) to help ensure that you can find your perfect size whether you are shopping online or purchasing from our store.
During the transition period Fourth Element will sell garments labelled with either old or new sizing. This might lead to you receiving an item labelled with a different size to your order. Don’t worry! The measurements match according to the size guide, and you will receive your order with the fit that you want.
| Universal | UK | USA | Ger | Fr/Es | Italy | Height | Chest | Waist | Hips | Inside Legs |
| cm | cm | cm | cm | cm | ||||||
| XXS X Short | 6 X Short | 2 X Short | 32 X Short | 34 X Short | 38 X Short | 155 - 163 | 68 - 76 | 51 - 59 | 76 - 84 | 67 - 71 |
| XXS Short | 6 Short | 2 Short | 32 Short | 34 Short | 38 Short | 158 - 166 | 68 - 76 | 51 - 59 | 76 - 84 | 69 - 73 |
| XXS | 6 | 2 | 32 | 34 | 38 | 160 - 168 | 68 - 76 | 51 - 59 | 76 - 84 | 71 - 75 |
| XS X SHORT | 8 X Short | 4 X Short | 34 X Short | 36 X Short | 40 X Short | 158 - 166 | 74 - 82 | 57 - 65 | 82 - 90 | 70 - 75 |
| XS Short | 8 Short | 4 Short | 34 Short | 36 Short | 40 Short | 160 - 168 | 74 - 82 | 57 - 65 | 82 - 90 | 71 - 75 |
| XS | 8 | 4 | 34 | 36 | 40 | 163 - 170 | 74 - 82 | 57 - 65 | 82 - 90 | 73 - 77 |
| S X Short | 10 X Short | 6 X Short | 36 X Short | 38 X Short | 42 X Short | 160 - 168 | 80 - 88 | 63 - 71 | 88 - 96 | 71 - 75 |
| S Short | 10 Short | 6 Short | 36 Short | 38 Short | 42 Short | 163 - 170 | 80 - 88 | 63 - 71 | 88 - 96 | 73 - 77 |
| S | 10 | 6 | 36 | 38 | 42 | 165 - 173 | 80 - 88 | 63 - 71 | 88 - 96 | 75 - 79 |
| M Short | 12 Short | 8 Short | 38 Short | 40 Short | 44 Short | 165 - 173 | 86 - 94 | 69 - 77 | 94 - 102 | 75 - 79 |
| M | 12 | 8 | 38 | 40 | 44 | 168 - 175 | 86 - 94 | 69 - 77 | 94 - 102 | 77 - 81 |
| M/L | 12/14 (12 top/14 bottom) | 8/10 (8 top/10 bottom) | 38/40 | 40/42 | 44/46 | 168 - 175 | 86 - 94 | 75 - 83 | 100 - 108 | 77 - 81 |
| L Short | 14 Short | 10 Short | 40 Short | 42 Short | 46 Short | 168 - 175 | 92 - 100 | 75 - 83 | 100 - 108 | 77 - 81 |
| L | 14 | 10 | 40 | 42 | 46 | 170 - 178 | 92 - 100 | 75 - 83 | 100 - 108 | 79 - 83 |
| XL Short | 16 Short | 12 Short | 42 Short | 44 Short | 48 Short | 170 - 178 | 98 - 106 | 81 - 89 | 106 - 114 | 79 - 83 |
| XL | 16 | 12 | 42 | 44 | 48 | 173 - 180 | 98 - 106 | 81 - 89 | 106 - 114 | 81 - 85 |
| XXL Short | 18 Short | 14 Short | 44 Short | 46 Short | 50 Short | 170 - 178 | 104 - 112 | 87 - 95 | 112 - 120 | 79 - 83 |
| XXL | 18 | 14 | 44 | 46 | 50 | 173 - 180 | 104 - 112 | 87 - 95 | 112 - 120 | 81 - 85 |
| XXXL Short | 20 Short | 16 Short | 46 Short | 48 Short | 52 Short | 170 - 178 | 110 - 118 | 93 - 101 | 118 - 126 | 79 - 83 |
| XXXL | 20 | 16 | 46 | 48 | 52 | 173 - 180 | 110 - 118 | 93 - 101 | 118 - 126 | 81 - 85 |
The Proteus II is the top-performing dive wetsuit on the market, known for its exceptional warmth. Available in 3mm and 5mm options, it sets the standard for thermal protection in the industry. Crafted from an eco-friendly limestone neoprene with Eco Carbon Black, derived from scrap rubber tires, each wetsuit reduces CO2 emissions by 200g. We've also eliminated harmful chemicals by using water-based Aqua-X glues in the lamination and construction process.
The wetsuit features a renowned Hydrolock inner neck seal and Glideskin wrist seals, minimizing water ingress. Its seams are double-glued, blind-stitched, and taped, offering superior thermal protection. Additionally, Hexcore linings in the body core enhance warmth, making the Proteus II ideal for extended water exposure.
The 5mm suit is a highly versatile option, offering an improved fit that makes it easier to don than the classic Proteus, while delivering enhanced thermal performance. Ideal for prolonged dives in water temperatures of 19°C and above, this suit excels in maintaining warmth. For additional protection in colder waters, consider layering with a Thermocline vest and shorts, and pairing it with a 3mm or 5mm hood.
FEATURES:
- A more eco-friendly neoprene
- Waterbased glues
- Improved fit and thermal performance
- Hexcore thermal lining on torso
- Thermoflex thermal lining throughout rest of suit
- Taped, waterproof seams
- Hydrolock neck seal system
- Internal PU ankle seals
- Glideskin wrist seals
- Ultra stretch knee pads
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.
Add Mcnett Neoslix to aid with the donning and doffing of the suit as well as to prolong the life of the seals too.
Click here for our handy guide on how too look after your wetsuit